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DTC Troubleshooting Index

TROUBLESHOOTING CHART

DTC (MIL indication⁽¹⁾)

Two Drive Cycle Detection

Detection Item

MIL

-

Variable Valve Timing Control (VTC) Oil Control Solenoid Valve Malfunction

ON

◦

Variable Valve Timing Control (VTC) System Malfunction

ON

◦

Mass Air Flow (MAF) Sensor Range/Performance Problem

ON

-

Mass Air Flow (MAF) Sensor Circuit Low Voltage

ON

-

Mass Air Flow (MAF) Sensor Circuit High Voltage

ON

-

Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

ON

-

Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

ON

◦

Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem

ON

-

Intake Air Temperature (IAT) Sensor Circuit Low Voltage

ON

-

Intake Air Temperature (IAT) Sensor Circuit High Voltage

ON

◦

Engine Coolant Temperature (ECT) Sensor 1 Range/Performance Problem

ON

-

Engine Coolant Temperature (ECT) Sensor 1 Circuit Low Voltage

ON

-

Engine Coolant Temperature (ECT) Sensor 1 Circuit High Voltage

ON

-

Throttle Position (TP) Sensor A Circuit Low Voltage

ON

-

Throttle Position (TP) Sensor A Circuit High Voltage

ON

◦

Engine Coolant Temperature (ECT) Sensor 1 Malfunction/Slow Response

ON

◦

Cooling System Malfunction

ON

◦

Air Fuel Ratio (A/F) Sensor (Sensor 1) Response Malfunction/Slow Response

ON

◦

Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction

ON

-

Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater Circuit Malfunction

ON

◦

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Low Voltage

ON

◦

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit High Voltage

ON

◦

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Slow Response

ON

-

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Heater Circuit Malfunction

ON

◦

Fuel System Too Lean

ON

◦

Fuel System Too Rich

ON

-

Throttle Position (TP) Sensor B Circuit Low Voltage

ON

-

Throttle Position (TP) Sensor B Circuit High Voltage

ON

P0300 and any combination of the following:
P0301 (71)
P0302 (72)
P0303 (73)
P0304 (74)

◦

Random Misfire Detected

ON

◦

No. 1 Cylinder Misfire Detected

ON

◦

No. 2 Cylinder Misfire Detected

ON

◦

No. 3 Cylinder Misfire Detected

ON

◦

No. 4 Cylinder Misfire Detected

ON

-

Knock Sensor Circuit Malfunction

ON

-

Crankshaft Position (CKP) Sensor No Signal

ON

-

Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption

ON

-

Camshaft Position (CMP) Sensor A No Signal

ON

-

Camshaft Position (CMP) Sensor A and Crankshaft Position (CKP) Sensor Incorrect Phase Detected

ON

-

Camshaft Position (CMP) Sensor A Circuit Intermittent Interruption

ON

-

Camshaft Position (CMP) Sensor B No Signal

ON

-

Camshaft Position (CMP) Sensor B Circuit Intermittent Interruption

ON

◦

Exhaust Gas Recirculation (EGR) Insufficient Flow

ON

◦

Exhaust Gas Recirculation (EGR) Valve Circuit Range/Performance Problem

ON

-

Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High Voltage

ON

◦

Catalyst System Efficiency Below Threshold

ON

-

Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction

ON

◦

Fuel Tank Pressure (FTP) Sensor Range/Performance Problem

ON

-

Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage

ON

-

Fuel Tank Pressure (FTP) Sensor Circuit High Voltage

ON

◦

Evaporative Emission (EVAP) System Large Leak Detected

ON

◦

Evaporative Emission (EVAP) System Very Small Leak Detected

ON

◦

Evaporative Emission (EVAP) System Leak Detected/Fuel Fill Cap Loose or Missing

OFF

◦

Fuel Level Sensor (Fuel Gauge Sending Unit) Range/Performance Problem

OFF

-

Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage

OFF

-

Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage

OFF

◦

Evaporative Emission (EVAP) System High Purge Flow

ON

◦

Evaporative Emission (EVAP) System Low Purge Flow

ON

-

Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit Low Voltage

ON

-

Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit High Voltage

ON

◦

Idle Control System RPM Lower Than Expected

ON

◦

Idle Control System RPM Higher Than Expected

ON

◦

Cold Start Idle Air Control System Performance Problem

ON

◦

Cold Start Ignition Timing Performance Problem

ON

-

A/C Pressure Sensor Circuit Low Voltage

OFF

-

A/C Pressure Sensor Circuit High Voltage

OFF

-

Charging System Low Voltage

OFF

-

Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage

OFF

-

Powertrain Control Module (PCM) Programming Error

ON

-

Powertrain Control Module (PCM) Processor Malfunction

ON

-

Powertrain Control Module (PCM) Internal Control Module Malfunction

ON

-

Powertrain Control Module (PCM) Internal Control Module Keep Alive Memory (KAM) Error

ON

-

VIN Not Programmed or Mismatch

ON

◦

Powertrain Control Module (PCM) Power Control Circuit/Internal Circuit Malfunction

ON

-

Output Shaft (Countershaft) Speed Sensor Circuit Malfunction

ON

◦

Variable Valve Timing Control (VTC) Advance Malfunction

ON

-

Barometric Pressure (BARO) Sensor Circuit Out of Range High

ON

◦

Engine Coolant Temperature (ECT) Sensor 1 Performance Problem

ON

◦

Manifold Absolute Pressure (MAP) Sensor Signal Lower Than Expected

ON

◦

Manifold Absolute Pressure (MAP) Sensor Signal Higher Than Expected

ON

-

Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS Circuit High Voltage

ON

-

Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Out of Range High

ON

-

Electrical Load Detector (ELD) Circuit Low Voltage

OFF

-

Electrical Load Detector (ELD) Circuit High Voltage

OFF

◦

Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem

ON

◦

Evaporative Emission (EVAP) System Purge Flow (Vacuum Line)

ON

-

Charging System High Voltage

OFF

-

Electronic Throttle Control System (ETCS) Control Relay ON Malfunction

ON

-

Electronic Throttle Control System (ETCS) Control Relay OFF Malfunction

ON

-

Throttle Valve Default Position Spring Performance Problem

ON

-

Throttle Valve Return Spring Performance Problem

ON

-

Alternator B Terminal Circuit Low Voltage

OFF

-

Alternator FR Terminal Circuit/IGP Circuit Low Voltage

OFF

-

Electronic Throttle Control System (ETCS) Malfunction

ON

-

Throttle Actuator Current Range/Performance Problem

ON

-

Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit Low Voltage

ON

-

Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit High Voltage

ON

-

Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP) Sensor E) Circuit Low Voltage

ON

-

Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP) Sensor E) Circuit High Voltage

ON

-

Throttle Position (TP) Sensor A/B Incorrect Voltage Correlation

ON

-

Accelerator Pedal Position (APP) Sensor A/B (Throttle Position (TP) Sensor D/E) Incorrect Voltage Correlation

ON

-

Throttle Actuator Control System Idle Position Not Learned

ON

◦

Engine Coolant Temperature (ECT) Sensor 2 Circuit Range/Performance Problem

ON

-

Engine Coolant Temperature (ECT) Sensor 2 Circuit Low Voltage

ON

-

Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage

ON

◦

Air Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean

ON

◦

Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem

ON

-

Barometric Pressure (BARO) Sensor Circuit Low Voltage

ON

-

Barometric Pressure (BARO) Sensor Circuit High Voltage

ON

-

Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS+ Circuit Low Voltage

ON

-

Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS- Circuit Low Voltage

ON

◦

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Signal Stuck Lean

ON

◦

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Signal Stuck Rich

ON

◦

Exhaust Gas Recirculation (EGR) System Malfunction

ON

◦

Evaporative Emission (EVAP) Canister Vent Shut Valve Stuck Closed Malfunction

ON

-

Powertrain Control Module (PCM) Ignition Off Internal Timer Malfunction

ON

-

Rocker Arm Oil Pressure Switch Circuit Low Voltage

ON

-

Rocker Arm Oil Pressure Switch Circuit High Voltage

ON

-

Rocker Arm Oil Control Solenoid Circuit Low Voltage

ON

-

Rocker Arm Oil Control Solenoid Circuit High Voltage

ON

◦

Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Range/Performance Problem

ON

-

F-CAN Malfunction (BUS-OFF (Powertrain Control Module (PCM)))

ON

-

F-CAN Malfunction (Powertrain Control Module (PCM)-VSA Control Module Unit)

OFF

-

F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module)

ON

-

PGM-FI System and A/T System Program Version Mismatch

ON

⁽¹⁾	These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS. Some DTCs do not cause the MIL to blink when the SCS line is jumped. The last four characters of these DTCs are shown in the gauge display.

NOTE: The above DTCs are indicated when the PGM-FI system is selected with the HDS. Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.