Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2003 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC ⁽¹⁾

Description

P0036 ⁽²⁾

Oxygen Sensor Heater Control Circuit (B1, S2)

P0100 ⁽²⁾

Mass Airflow Meter Circuit

P0101

Mass Airflow Meter Circuit Range/Performance

P0110 ⁽²⁾

Intake Air Temperature Sensor Circuit

P0115 ⁽²⁾

Engine Coolant Temperature Sensor Circuit

P0116

Engine Coolant Temperature Sensor Circuit Range/Performance

P0120 ⁽²⁾

Throttle Position Sensor Circuit

P0121

Throttle Position Sensor Circuit Range/Performance

P0125

Insufficient Coolant Temperature For Closed Loop Fuel Control

P0128

Thermostat Malfunction

P0134 ⁽⁴⁾

Oxygen Sensor Heater Circuit (B1 S1)

P0135 ⁽⁴⁾

Oxygen Sensor Heater Circuit (B1 S1)

P0136

Oxygen Sensor Circuit Malfunction (B1 S2)

P0171

System Too Lean

P0172

System Too Rich

P0300 ⁽⁶⁾

Random/Multiple Cylinder Misfire Detected

P0301 ⁽⁶⁾

Cylinder No. 1 Misfire Detected

P0302 ⁽⁶⁾

Cylinder No. 2 Misfire Detected

P0303 ⁽⁶⁾

Cylinder No. 3 Misfire Detected

P0304 ⁽⁶⁾

Cylinder No. 4 Misfire Detected

P0325 ⁽²⁾

Knock Sensor Circuit

P0335

Crankshaft Position Sensor "A" Circuit

P0339 ⁽⁷⁾

Crankshaft Position Sensor "A" Circuit Intermittent

P0340 ⁽²⁾

Camshaft Position Sensor "A" Circuit (B1 Or Single Sensor)

P0341

Camshaft Position Sensor "A" Circuit Range/Performance (B1 Or Single Sensor)

P0351 ⁽²⁾

Ignition Coil "A" - Primary/Secondary Circuit

P0352 ⁽²⁾

Ignition Coil "B" - Primary/Secondary Circuit

P0353 ⁽²⁾

Ignition Coil "C" - Primary/Secondary Circuit

P0354 ⁽²⁾

Ignition Coil "D" - Primary/Secondary Circuit

P0401 ⁽³⁾

Insufficient Exhaust Gas Recirculation Flow Detected

P0402 ⁽³⁾

Excessive Exhaust Gas Recirculation Flow Detected

P0420

Catalyst System Efficiency Below Threshold

P0441

EVAP Emission Control System Incorrect Purge Flow

P0442

EVAP Emission Control System Leak Detected (Small Leak)

P0446

EVAP Emission Control System Vent Control Circuit

P0450

EVAP Emission Control System Pressure Sensor Circuit Malfunction

P0451

EVAP Emission Control System Pressure Sensor Range/Performance

P0456

EVAP Emission Control System Leak Detected (Very Small Leak)

P0500

Vehicle Speed Sensor "A" Circuit

P0505

Idle Air Control System

P0511

Idle Air Control Circuit

P0560

System Voltage

P0617

Starter Relay Circuit High

P0705 ⁽⁵⁾

Transmission Range Sensor Circuit Malfunction (PRNDL Input)

P0724 ⁽⁵⁾

Brake Switch "B" Circuit High

P0850 ⁽⁵⁾

Park/Neutral Position Switch Circuit

P2195 ⁽⁴⁾

Oxygen (A/F) Sensor Signal Stuck Lean (B1 S1)

P2196 ⁽⁴⁾

Oxygen (A/F) Sensor Signal Stuck Rich (B1 S1)

P2237 ⁽⁴⁾

Oxygen (A/F) Sensor Pumping Current Circuit Open (B1 S1)

P2A00

Air/Fuel Sensor Circuit Slow Response (B1 S1)

⁽¹⁾	Some DTCs are two-trip detection logic DTCs. For more information, see TWO-TRIP DETECTION LOGIC under SELF-DIAGNOSTIC SYSTEM.

⁽²⁾	If this DTC is set, Engine Control Module (ECM) will enter fail-safe mode.

⁽³⁾	Applies only to the 2.7L 3RZ-FE.

⁽⁴⁾	This DTC is related to A/F sensor, although the caption is Oxygen Sensor.

⁽⁵⁾	DTC applies only to models with automatic transmission. For testing procedures, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

⁽⁶⁾	MIL lights up or blinks.

⁽⁷⁾	MIL will not illuminate.