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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2009 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Parameters listed in the chart may not be exactly the same as your readings due to the type of instrument or other factors. If a DTC is displayed, check the trouble area for the DTC listed in the table below. For details of each DTC.

*: MIL flashes when a catalyst damaged misfire is detected.

SFI system 

DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area MIL Memory See page
P0010  Camshaft Position "A" Actuator Circuit (Bank 1)
  • Open or short in Oil Control Valve (OCV) circuit
  • OCV
  • ECM
 Comes on DTC stored  
P0011  Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)
  • Valve timing
  • Oil Control Valve (OCV)
  • OCV filter
  • Camshaft timing gear assembly
  • ECM
 Comes on DTC stored  
P0012  Camshaft Position "A" - Timing Over-Retarded (Bank 1)
  • Same as DTC P0011
 Comes on DTC stored  
P0016  Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
  • Mechanical system (Timing chain has jumped tooth or chain stretched)
  • Oil control valve (OCV)
  • Camshaft timing gear assembly
  • ECM
 Comes on DTC stored  
P0031  Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)
  • Open in Air-Fuel Ratio (A/F) sensor heater circuit
  • A/F sensor heater
  • A/F HEATER relay
  • ECM
 Comes on DTC stored  
P0032  Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)
  • Short in Air-Fuel Ratio (A/F) sensor heater circuit
  • A/F sensor heater
  • A/F HEATER relay
  • ECM
 Comes on DTC stored  
P0037  Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2)
  • Open or short in Heated Oxygen (HO2) sensor heater circuit
  • HO2 sensor heater
  • EFI relay
  • ECM
 Comes on DTC stored  
P0038  Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2)
  • Open or short in Heated Oxygen (HO2) sensor heater circuit
  • HO2 sensor heater
  • EFI relay
  • ECM
 Comes on DTC stored  
P0100  Mass or Volume Air Flow Circuit
  • Open or short in Mass Air Flow (MAF) meter circuit
  • MAF meter
  • ECM
 Comes on DTC stored  
P0101  Mass Air Flow Circuit Range/Performance Problem
  • Mass Air Flow (MAF) meter
  • Air induction system
  • PCV hose connections
 Comes on DTC stored  
P0102  Mass or Volume Air Flow Circuit Low Input
  • Open or short in Mass Air Flow (MAF) meter circuit
  • MAF meter
  • ECM
 Comes on DTC stored  
P0103  Mass or Volume Air Flow Circuit High Input
  • Open or short in Mass Air Flow (MAF) meter circuit
  • MAF meter
  • ECM
 Comes on DTC stored  
P0110  Intake Air Temperature Circuit
  • Open or short in Intake Air Temperature (IAT) sensor circuit
  • IAT sensor (built into MAF meter)
  • ECM
 Comes on DTC stored  
P0111  Intake Air Temperature Sensor Gradient Too High
  • Mass air flow meter
 Comes on DTC stored  
P0112  Intake Air Temperature Circuit Low Input
  • Short in Intake Air Temperature (IAT) sensor circuit
  • IAT sensor (built into MAF meter)
  • ECM
 Comes on DTC stored  
P0113  Intake Air Temperature Circuit High Input
  • Open in Intake Air Temperature (IAT) sensor circuit
  • IAT sensor (built into MAF meter)
  • ECM
 Comes on DTC stored  
P0115  Engine Coolant Temperature Circuit
  • Open or short in Engine Coolant Temperature (ECT) sensor circuit
  • ECT sensor
  • ECM
 Comes on DTC stored  
P0116  Engine Coolant Temperature Circuit Range/Performance Problem
  • Thermostat
  • Engine Coolant Temperature (ECT) sensor
 Comes on DTC stored  
P0117  Engine Coolant Temperature Circuit Low Input
  • Short in Engine Coolant Temperature (ECT) sensor circuit
  • ECT sensor
  • ECM
 Comes on DTC stored  
P0118  Engine Coolant Temperature Circuit High Input
  • Open in Engine Coolant Temperature (ECT) sensor circuit
  • ECT sensor
  • ECM
 Comes on DTC stored  
P011B  Engine Coolant Temperature/Intake Air Temperature Correlation
  • IAT sensor
  • ECT sensor
  • ECM
 Comes on DTC stored  
P0120  Throttle/Pedal Position Sensor/Switch "A" Circuit
  • Throttle Position (TP) sensor (built into throttle body)
  • ECM
 Comes on DTC stored  
P0121  Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem
  • Throttle Position (TP) sensor (built into throttle body)
 Comes on DTC stored  
P0122  Throttle/Pedal Position Sensor/Switch "A" Circuit Low Input
  • Throttle Position (TP) sensor (built into throttle body)
  • Short in VTA1 circuit
  • Open in VC circuit
  • ECM
 Comes on DTC stored  
P0123  Throttle/Pedal Position Sensor/Switch "A" Circuit High Input
  • Throttle Position (TP) sensor (built into throttle body)
  • Open in VTA1 circuit
  • Open in E2 circuit
  • Short between VC and VTA1 circuits
  • ECM
 Comes on DTC stored  
P0125  Insufficient Coolant Temperature for Closed Loop Fuel Control
  • Cooling system
  • Engine coolant temperature sensor
  • Thermostat
 Comes on DTC stored  
P0128  Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
  • Thermostat
  • Cooling system
  • Engine coolant temperature sensor
  • ECM
 Comes on DTC stored  
P0136  Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)
  • Open or short in Heated Oxygen (HO2) sensor (sensor 2) circuit
  • HO2 sensor (sensor 2)
  • HO2 sensor heater (sensor 2)
  • Air-Fuel Ratio (A/F) sensor (sensor 1)
  • EFI relay
  • Gas leakage from exhaust system
 Comes on DTC stored  
P0137  Heated Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2)
  • Open in Heated Oxygen (HO2) sensor (sensor 2) circuit
  • HO2 sensor (sensor 2)
  • HO2 sensor heater (sensor 2)
  • EFI relay
  • Gas leakage from exhaust system
 Comes on DTC stored  
P0138  Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)
  • Short in Heated Oxygen (HO2) sensor (sensor 2) circuit
  • HO2 sensor (sensor 2)
  • ECM internal circuit malfunction
 Comes on DTC stored  
P0139  Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2)
  • Short in HO2 sensor circuit
  • HO2 sensor (sensor 2)
 Comes on DTC stored  
P0141  Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
  • Open or short in HO2 sensor heater circuit
  • HO2 sensor heater
  • EFI relay
  • ECM
 Comes on DTC stored  
P0171  System Too Lean (Bank 1)
  • Air induction system
  • Injector blockage
  • Mass Air Flow (MAF) meter
  • Engine Coolant Temperature (ECT) sensor
  • Fuel pressure
  • Gas leakage from exhaust system
  • Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit
  • A/F sensor (sensor 1)
  • A/F sensor heater (sensor 1)
  • A/F HEATER relay
  • A/F sensor heater and A/F HEATER relay circuits
  • PCV valve and hose
  • PCV hose connections
  • ECM
 Comes on DTC stored  
P0172  System Too Rich (Bank 1)
  • Injector leakage or blockage
  • Mass Air Flow (MAF) meter
  • Engine Coolant Temperature (ECT) sensor
  • Ignition system
  • Fuel pressure
  • Gas leakage from exhaust system
  • Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit
  • A/F sensor (sensor 1)
  • A/F sensor heater (sensor 1)
  • A/F HEATER relay
  • A/F sensor heater and A/F HEATER relay circuits
  • ECM
 Comes on DTC stored  
P0220  Throttle/Pedal Position Sensor/Switch "B" Circuit
  • Throttle Position (TP) sensor (built into throttle body)
  • ECM
 Comes on DTC stored  
P0222  Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input
  • Throttle Position (TP) sensor (built into throttle body)
  • Short in VTA2 circuit
  • Open in VC circuit
  • ECM
 Comes on DTC stored  
P0223  Throttle/Pedal Position Sensor/Switch "B" Circuit High Input
  • Throttle Position (TP) sensor (built into throttle body)
  • Open in VTA2 circuit
  • Open in E2 circuit
  • Short between VC and VTA2 circuits
  • ECM
 Comes on DTC stored  
P0300  Random/Multiple Cylinder Misfire Detected
  • Open or short in engine wire harness
  • Connector connection
  • Vacuum hose connections
  • Ignition system
  • Injector
  • Fuel pressure
  • Mass Air Flow (MAF) meter
  • Air induction system
  • Engine Coolant Temperature (ECT) sensor
  • Compression pressure
  • Valve clearance
  • Valve timing
  • PCV valve and hose
  • PCV hose connections
  • ECM
 Comes on/Blinks* DTC stored  
P0301  Cylinder 1 Misfire Detected
  • Same as P0300
 Comes on/Blinks* DTC stored  
P0302  Cylinder 2 Misfire Detected
  • Same as P0300
 Comes on/Blinks* DTC stored  
P0303  Cylinder 3 Misfire Detected
  • Same as P0300
 Comes on/Blinks* DTC stored  
P0304  Cylinder 4 Misfire Detected
  • Same as P0300
 Comes on/Blinks* DTC stored  
P0327  Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
  • Short in knock sensor circuit
  • Knock sensor
  • ECM
 Comes on DTC stored  
P0328  Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
  • Open in knock sensor circuit
  • Knock sensor
  • ECM
 Comes on DTC stored  
P0335  Crankshaft Position Sensor "A" Circuit
  • Open or short in Crankshaft Position (CKP) sensor circuit
  • CKP sensor
  • Sensor plate (CKP sensor plate)
  • ECM
 Comes on DTC stored  
P0339  Crankshaft Position Sensor "A" Circuit Intermittent
  • Same as P0335
 - DTC stored  
P0340  Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor)
  • Open or short in Camshaft Position (CMP) sensor circuit
  • CMP sensor
  • Camshaft
  • Jumped tooth of timing chain
  • ECM
 Comes on DTC stored  
P0351  Ignition Coil "A" Primary/Secondary Circuit
  • Ignition system
  • Open or short in IGF1 or IGT circuit (1 to 4) between ignition coil with igniter and ECM
  • No. 1 to No. 4 ignition coils with igniters
  • ECM
 Comes on DTC stored  
P0352  Ignition Coil "B" Primary/Secondary Circuit
  • Same as DTC P0351
 Comes on DTC stored  
P0353  Ignition Coil "C" Primary/Secondary Circuit
  • Same as DTC P0351
 Comes on DTC stored  
P0354  Ignition Coil "D" Primary/Secondary Circuit
  • Same as DTC P0351
 Comes on DTC stored  
P0412  Secondary Air Injection System Switching Valve "A" Circuit
  • Open in Air Switching Valve (ASV) drive circuit
  • Short between ASV drive circuit and +B circuit
  • Short between ASV drive circuit and body ground
  • Air Injection Control Driver (AID)
  • ASV
  • ECM
 Comes on DTC stored  
P0418  Secondary Air Injection System Control "A" Circuit
  • Open in air pump drive circuit
  • Short between air pump drive circuit and +B circuit
  • Short between air pump drive circuit and body ground
  • Air pump
  • Air Injection Control Driver (AID)
  • ECM
 Comes on DTC stored  
P0420  Catalyst System Efficiency Below Threshold (Bank 1)
  • Front exhaust pipe (TWC)
  • Gas leakage from exhaust system
  • Air-Fuel Ratio (A/F) sensor (sensor 1)
  • Heated Oxygen (HO2) sensor (sensor 2)
 Comes on DTC stored  
P043E  Evaporative Emission System Leak Detection Reference Orifice Low Flow
  • Canister pump module (Reference orifice, leak detection pump, vent valve)
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored  
P043F  Evaporative Emission System Reference Orifice High Flow
  • Canister pump module (Reference orifice, leak detection pump, vent valve)
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored  
P0441  Evaporative Emission Control System Incorrect Purge Flow
  • Purge VSV
  • Connector/wire harness (Purge VSV - ECM)
  • Canister pump module
  • Leakage from EVAP line (Purge VSV
  • Intake manifold)
  • Leakage from EVAP system
  • ECM
 Comes on DTC stored  
P0450  Evaporative Emission Control System Pressure Sensor/Switch
  • Canister pump module
  • ECM
 Comes on DTC stored  
P0451  Evaporative Emission Control System Pressure Sensor Range/Performance
  • Canister pump module
  • Connector/Wire harness (Canister pump module - ECM)
  • ECM
 Comes on DTC stored  
P0452  Evaporative Emission Control System Pressure Sensor/Switch Low Input
  • Canister pump module
  • Connector/Wire harness (Canister pump module - ECM)
  • ECM
 Comes on DTC stored  
P0453  Evaporative Emission Control System Pressure Sensor/Switch High Input
  • Canister pump module
  • Connector/Wire harness (Canister pump module - ECM)
  • ECM
 Comes on DTC stored  
P0455  Evaporative Emission Control System Leak Detected (Gross Leak)
  • Fuel tank cap (loose)
  • Leakage from EVAP line (Canister - Fuel tank)
  • Leakage from EVAP line (Purge VSV - Canister)
  • Canister pump module
  • Leakage from fuel tank
  • Leakage from canister
 Comes on DTC stored  
P0456  Evaporative Emission Control System Leak Detected (Very Small Leak)
  • Same as DTC P0455
 Comes on DTC stored  
P0500  Vehicle Speed Sensor "A"
  • Open or short in speed signal circuit
  • Combination meter
  • ECM
  • Skid control ECU
 Comes on DTC stored  
P0503  Vehicle Speed Sensor "A" Intermittent/Erratic/High
  • Open or short in speed signal circuit
  • Combination meter
  • ECM
  • Skid control ECU
 - DTC stored  
P0504  Brake Switch "A"/"B" Correlation
  • Short in stop light switch signal circuit
  • STOP fuse
  • Stop light switch
  • ECM
 - DTC stored  
P0505  Idle Control System Malfunction
  • Electronic Throttle Control System (ETCS)
  • Air induction system
  • PCV hose connection
  • ECM
 Comes on DTC stored  
P050A  Cold Start Idle Air Control System Performance
  • Throttle body
  • Mass air flow meter
  • PCV hose
  • Air cleaner filter
  • Air induction system
  • VVT system
  • ECM
 Comes on DTC stored  
P0560  System Voltage
  • Open in back up power source circuit
  • EFI fuse
  • ECM
 Comes on DTC stored  
P0604  Random Access Memory (RAM)
  • ECM
 Comes on DTC stored  
P0606  ECM/PCM Processor
  • Exhaust gas leak
  • HO2 sensor
  • ECM
 Comes on DTC stored  
P0607  Control Module Performance
  • ECM
 Comes on DTC stored  
P0617  Starter Relay Circuit High
  • Park/Neutral Position (PNP) switch (for A/T)
  • Clutch start switch (for M/T)
  • Starter relay circuit
  • Ignition switch
  • ECM
 Comes on DTC stored  
P0630  VIN not Programmed or Mismatch - ECM/PCM
  • ECM
 Comes on DTC stored  
P0657  Actuator Supply Voltage Circuit/Open
  • ECM
 Comes on DTC stored  
P1500  AC Inverter Malfunction
  • Open in speed signal circuit
  • Short between idle-up signal circuit and +B circuit
  • Voltage inverter
  • ECM
 Comes on DTC stored  
P1613  Secondary Air Injection Driver Malfunction
  • Air Injection Control Driver (AID)
  • Open in AID ground circuit
  • Short in diagnostic information signal circuit (AID - ECM)
  • Open or short in air pump and air switching valve command signal circuit (AID - ECM)
  • Open or short in AID power source circuit
  • Open in diagnostic information signal circuit (AID - ECM)
  • AID
  • ECM
 Comes on DTC stored  
P2102  Throttle Actuator Control Motor Circuit Low
  • Open in throttle actuator circuit
  • Throttle actuator
  • ECM
 Comes on DTC stored  
P2103  Throttle Actuator Control Motor Circuit High
  • Short in throttle actuator circuit
  • Throttle actuator
  • Throttle valve
  • Throttle body assembly
  • ECM
 Comes on DTC stored  
P2111  Throttle Actuator Control System - Stuck Open
  • Throttle actuator
  • Throttle body assembly
  • Throttle valve
 Comes on DTC stored  
P2112  Throttle Actuator Control System - Stuck Closed
  • Throttle actuator
  • Throttle body assembly
  • Throttle valve
 Comes on DTC stored  
P2118  Throttle Actuator Control Motor Current Range/Performance
  • Open in Electronic Throttle Control System (ETCS) power source circuit
  • ETCS fuse
  • ECM
 Comes on DTC stored  
P2119  Throttle Actuator Control Throttle Body Range/Performance
  • Electronic Throttle Control System (ETCS)
  • ECM
 Comes on DTC stored  
P2120  Throttle/Pedal Position Sensor/Switch "D" Circuit
  • Accelerator pedal position sensor
  • ECM
 Comes on DTC stored  
P2121  Throttle/Pedal Position Sensor/Switch "D" Circuit Range/Performance
  • Accelerator pedal position sensor circuit
  • Accelerator pedal position sensor
  • ECM
 Comes on DTC stored  
P2122  Throttle/Pedal Position Sensor/Switch "D" Circuit Low Input
  • Accelerator pedal position sensor
  • Open in VCP1 circuit
  • Open or ground short in VPA circuit
  • ECM
 Comes on DTC stored  
P2123  Throttle/Pedal Position Sensor/Switch "D" Circuit High Input
  • Accelerator pedal position sensor
  • Open in EPA1 circuit
  • ECM
 Comes on DTC stored  
P2125  Throttle/Pedal Position Sensor/Switch "E" Circuit
  • Accelerator pedal position sensor
  • ECM
 Comes on DTC stored  
P2127  Throttle/Pedal Position Sensor/Switch "E" Circuit Low Input
  • Accelerator pedal position sensor
  • Open in VCP2 circuit
  • Open or ground short in VPA2 circuit
  • ECM
 Comes on DTC stored  
P2128  Throttle/Pedal Position Sensor/Switch "E" Circuit High Input
  • Accelerator pedal position sensor
  • Open in EPA2 circuit
  • ECM
 Comes on DTC stored  
P2135  Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation
  • Short between VTA1 and VTA2 circuits
  • TP sensor (built into throttle body)
  • ECM
 Comes on DTC stored  
P2138  Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation
  • Short between VPA and VPA2 circuits
  • Accelerator pedal position sensor
  • ECM
 Comes on DTC stored  
P2195  Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1)
  • Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit
  • A/F sensor (sensor 1)
  • A/F sensor (sensor 1) heater
  • A/F HEATER relay
  • A/F sensor heater and relay circuits
  • Air induction system
  • Fuel pressure
  • Injector
  • ECM
 Comes on DTC stored  
P2196  Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1)
  • Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit
  • A/F sensor (sensor 1)
  • A/F sensor (sensor 1) heater
  • A/F HEATER relay
  • A/F sensor heater and relay circuits
  • Air induction system
  • Fuel pressure
  • Injector
  • ECM
 Comes on DTC stored  
P2237  Oxygen (A/F) Sensor Pumping Current Circuit/Open (Bank 1 Sensor 1)
  • Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit
  • A/F sensor (sensor 1)
  • ECM
 Comes on DTC stored  
P2238  Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1)
  • Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit
  • A/F sensor (sensor 1)
  • ECM
 Comes on DTC stored  
P2239  Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1)
  • Same as DTC P2238
 Comes on DTC stored  
P2252  Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1)
  • Same as DTC P2238
 Comes on DTC stored  
P2253  Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1)
  • Same as DTC P2238
 Comes on DTC stored  
P2401  Evaporative Emission Leak Detection Pump Stuck OFF
  • Canister pump module (Reference orifice, leak detection pump, vent valve)
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored  
P2402  Evaporative Emission Leak Detection Pump Stuck ON
  • Canister pump module (Reference orifice, leak detection pump, vent valve)
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored  
P2419  Evaporative Emission System Switching Valve Control Circuit Low
  • Canister pump module (Reference orifice, leak detection pump, vent valve)
  • Connector/wire harness (Canister pump module - ECM)
  • EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
  • ECM
 Comes on DTC stored  
P2420  Evaporative Emission System Switching Valve Control Circuit High
  • Canister pump module (Reference orifice, leak detection pump, vent valve)
  • Connector/wire harness (Canister pump module - ECM)
  • ECM
 Comes on DTC stored  
P2430  Secondary Air Injection System Air Flow/Pressure Sensor Circuit Bank 1
  • Pressure sensor
  • Open or short in pressure sensor circuit
  • ECM
 Comes on DTC stored  
P2431  Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance Bank 1
  • Pressure sensor
  • Open or short in pressure sensor circuit
  • ECM
 Comes on DTC stored  
P2432  Secondary Air Injection System Air Flow/Pressure Sensor Circuit Low Bank 1
  • Pressure sensor
  • Open or short in pressure sensor circuit
  • ECM
 Comes on DTC stored  
P2433  Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
  • Pressure sensor
  • Open or short in pressure sensor circuit
  • ECM
 Comes on DTC stored  
P2440  Secondary Air Injection System Switching Valve Stuck Open Bank 1
  • Air switching valve (ASV)
  • Open or short in ASV circuit
  • Pressure sensor
  • Pressure sensor circuit
  • Air Injection Control Driver (AID)
  • ECM
 Comes on DTC stored  
P2441  Secondary Air Injection System Switching Valve Stuck Close Bank 1
  • Air switching valve (ASV)
  • Open or short in ASV circuit
  • Vacuum hose (ASV - pressure sensor)
  • Air injection hose
  • Pressure sensor
  • Pressure sensor circuit
  • Air Injection Control Driver (AID)
  • ECM
 Comes on DTC stored  
P2444  Secondary Air Injection System Pump Stuck On Bank 1
  • Short in air pump circuit
  • Air pump
  • Open or short in pressure sensor circuit
  • Pressure sensor
  • Air Injection Control Driver (AID)
  • ECM
 Comes on DTC stored  
P2445  Secondary Air Injection System Pump Stuck Off Bank 1
  • Air pump
  • Open in air pump circuit
  • Air injection system piping
  • Vacuum hose (pressure sensor - air switching valve)
  • Pressure sensor
  • Open or short in pressure sensor circuit
  • Air Injection Control Driver (AID)
  • ECM
 Comes on DTC stored  
P2610  ECM/PCM Internal Engine Off Timer Performance
  • ECM
 Comes on DTC stored  
P2A00  A/F Sensor Circuit Slow Response (Bank 1 Sensor 1)
  • Open or short in air-fuel ratio sensor circuit
  • Air-Fuel Ratio (A/F) sensor
  • ECM
 Comes on DTC stored  
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