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HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 178 (ENGINE CONTROL SYSTEM SELF DIAGNOSTICS (1GR-FE))DIAGNOSTIC TROUBLE CODE DEFINITIONS

2004 Toyota Celica GT, Standard

Diagnostic Trouble Code Definitions

2004 Toyota Celica GT, StandardSECTION Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC ⁽¹⁾

Description

P0010 ⁽⁴⁾

Camshaft Position "A" Actuator Circuit (Bank 1)

P0011 ⁽⁴⁾

Camshaft Position "A" Timing Over Advanced Or System Performance (Bank 1)

P0012 ⁽⁴⁾

Camshaft Position "A" Timing Over Retarded (Bank 1)

P0016 ⁽⁴⁾

Crankshaft Position/Camshaft Position Correlation (Bank 1, Sensor "A")

P0018 ⁽⁴⁾

Crankshaft Position/Camshaft Position Correlation (Bank 2, Sensor "A")

P0020 ⁽⁴⁾

Camshaft Position "A" Actuator Circuit (Bank 2)

P0021 ⁽⁴⁾

Camshaft Position "A" Timing Over Advanced Or System Performance (Bank 2)

P0022 ⁽⁴⁾

Camshaft Position "A" Timing Over Retarded (Bank 2)

P0031 ⁽⁷⁾⁽⁴⁾

Oxygen Sensor Heater Control Circuit Low (B1, S1)

P0032 ⁽⁷⁾⁽⁴⁾

Oxygen Sensor Heater Control Circuit High (B1, S1)

P0037 ⁽⁴⁾

Oxygen Sensor Heater Control Circuit Low (B1, S2)

P0038 ⁽⁴⁾

Oxygen Sensor Heater Control Circuit High (B1, S2)

P0051 ⁽⁷⁾⁽⁴⁾

Oxygen Sensor Heater Control Circuit Low (B2, S1)

P0052 ⁽⁷⁾⁽⁴⁾

Oxygen Sensor Heater Control Circuit High (B2, S1)

P0057 ⁽⁴⁾

Oxygen Sensor Heater Control Circuit Low (B2, S2)

P0058 ⁽⁴⁾

Oxygen Sensor Heater Control Circuit High (B2, S2)

P0100 ⁽⁴⁾

Mass Airflow Meter Circuit

P0101

Mass Airflow Meter Circuit

P0102 ⁽⁴⁾

Mass Airflow Meter Circuit Low Input

P0103 ⁽⁴⁾

Mass Airflow Meter Circuit High Input

P0110 ⁽⁴⁾

Intake Air Temperature Sensor Circuit

P0112 ⁽⁴⁾

Intake Air Temperature Sensor Circuit Low Input

P0113 ⁽⁴⁾

Intake Air Temperature Sensor Circuit High Input

P0115 ⁽⁴⁾

Engine Coolant Temperature Sensor Circuit

P0116

Engine Coolant Temperature Sensor Circuit Range/Performance

P0117 ⁽⁴⁾

Engine Coolant Temperature Sensor Circuit Low Input

P0118 ⁽⁴⁾

Engine Coolant Temperature Sensor Circuit High Input

P0120 ⁽⁴⁾

Throttle Position Sensor/Switch "A" Circuit

P0121

Throttle Position Sensor/Switch "A" Circuit Range/Performance

P0122 ⁽⁴⁾

Throttle Position Sensor/Switch "A" Circuit Low Input

P0123 ⁽⁴⁾

Throttle Position Sensor/Switch "A" Circuit High Input

P0125

Insufficient Coolant Temperature For Closed Loop Fuel Control

P0128

Coolant Thermostat Malfunction

P0136

Heated Oxygen Sensor Circuit Malfunction (B1, S2)

P0156

Heated Oxygen Sensor Circuit Malfunction (B2, S2)

P0171

System Too Lean (Bank 1)

P0172

System Too Rich (Bank 1)

P0174

System Too Lean (Bank 2)

P0175

System Too Rich (Bank 2)

P0220 ⁽⁴⁾

Throttle Position Sensor/Switch "B" Circuit

P0222 ⁽⁴⁾

Throttle Position Sensor/Switch "B" Circuit Low Input

P0223 ⁽⁴⁾

Throttle Position Sensor/Switch "B" Circuit High Input

P0230 ⁽⁸⁾

Fuel Pump Primary Circuit

P0300 ⁽⁹⁾

Random/Multiple Cylinder Misfire Detected

P0301 ⁽⁹⁾

Cylinder No. 1 Misfire Detected

P0302 ⁽⁹⁾

Cylinder No. 2 Misfire Detected

P0303 ⁽⁹⁾

Cylinder No. 3 Misfire Detected

P0304 ⁽⁹⁾

Cylinder No. 4 Misfire Detected

P0305 ⁽⁹⁾

Cylinder No. 5 Misfire Detected

P0306 ⁽⁹⁾

Cylinder No. 6 Misfire Detected

P0325 ⁽⁴⁾

Knock Sensor No. 1 Circuit (Bank 1 Or Single Sensor)

P0327 ⁽⁴⁾

Knock Sensor No. 1 Circuit Low Input (Bank 1 Or Single Sensor)

P0328 ⁽⁴⁾

Knock Sensor No. 1 Circuit High Input (Bank 1 Or Single Sensor)

P0330 ⁽⁴⁾

Knock Sensor No. 2 Circuit (Bank 2)

P0332 ⁽⁴⁾

Knock Sensor No. 2 Circuit Low Input (Bank 2)

P0333 ⁽⁴⁾

Knock Sensor No. 2 Circuit High Input (Bank 2)

P0335

Crankshaft Position Sensor "A" Circuit

P0339 ⁽⁸⁾

Crankshaft Position Sensor "A" Circuit Intermittent

P0340

Camshaft Position Sensor "A" Circuit (Bank 1 Or Single Sensor)

P0341

Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1 Or Single Sensor)

P0345

Camshaft Position Sensor "A" Circuit (Bank 2)

P0346

Camshaft Position Sensor "A" Circuit Range/Performance (Bank 2)

P0351 ⁽⁵⁾

Ignition Coil "A" Primary/Secondary Circuit

P0352 ⁽⁵⁾

Ignition Coil "B" Primary/Secondary Circuit

P0353 ⁽⁵⁾

Ignition Coil "C" Primary/Secondary Circuit

P0354 ⁽⁵⁾

Ignition Coil "D" Primary/Secondary Circuit

P0355 ⁽⁵⁾

Ignition Coil "E" Primary/Secondary Circuit

P0356 ⁽⁵⁾

Ignition Coil "F" Primary/Secondary Circuit

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

P0451

EVAP Emission Control System Pressure Sensor/Switch Range/Performance

P0452

EVAP Emission Control System Pressure Sensor Low Input

P0453

EVAP Emission Control System Pressure Sensor High Input

P0456

EVAP Emission Control System Leak Detected (Very Small Leak)

P0500

Vehicle Speed Sensor "A" Circuit

P0503 ⁽⁸⁾

Vehicle Speed Sensor "A" Intermittent/Erratic/High

P0504 ⁽⁸⁾

Brake Switch Correlation

P0505

Idle Air Control System

P0560

System Voltage

P0571 ⁽⁸⁾⁽³⁾

Brake Switch "A" Circuit

P0604

Internal Control Module RAM Error

P0606

Engine Control Module Processor

P0607

Control Module Performance

P0617

Starter Relay Circuit High

P0657

Actuator Supply Voltage Circuit Open

P0705 ⁽⁶⁾

Transmission Range Sensor Circuit Malfunction (PRNDL Input)

P0710 ⁽⁶⁾

Transmission Fluid Temp. Sensor "A" - Circuit

P0712 ⁽⁶⁾

Transmission Fluid Temp. Sensor "A" - Circuit Low Input

P0713 ⁽⁶⁾

Transmission Fluid Temp. Sensor "A" - Circuit High Input

P0717 ⁽⁶⁾

Input/Turbine Speed Sensor Circuit No Signal

P0722 ⁽⁶⁾

Output Speed Sensor Circuit No Signal

P0724 ⁽⁶⁾

Stoplight Switch B Signal Circuit High

P0741 ⁽⁶⁾

Pressure Control Solenoid Valve "A" - Electrical

P0751 ⁽⁶⁾

Shift Solenoid Valve "A" - Malfunction

P0756 ⁽⁶⁾

Shift Solenoid Valve "B" - Malfunction

P0850 ⁽⁶⁾

PNP Switch Input Circuit

P0973 ⁽⁶⁾

Shift Solenoid Valve "A" - Control Circuit Low

P0974 ⁽⁶⁾

Shift Solenoid Valve "A" - Control Circuit High

P0976 ⁽⁶⁾

Shift Solenoid Valve "B" - Control Circuit Low

P0977 ⁽⁶⁾

Shift Solenoid Valve "B" - Control Circuit High

P1782 ⁽¹⁰⁾

Transfer L4 Switch Malfunction

P2102 ⁽⁴⁾

Throttle Actuator Control Motor Circuit Low

P2103 ⁽⁴⁾

Throttle Actuator Control Motor Circuit High

P2111 ⁽⁴⁾

Throttle Actuator Control System Stuck Open

P2112 ⁽⁴⁾

Throttle Actuator Control System Stuck Closed

P2118 ⁽⁴⁾

Throttle Actuator Control Motor Current Range/Performance Problem

P2119 ⁽⁴⁾

Throttle Actuator Control
Throttle Body Range/Performance Problem

P2120 ⁽⁴⁾

Throttle Pedal Position Sensor/Switch D Circuit Malfunction

P2121 ⁽⁴⁾

Throttle Pedal Position Sensor/Switch D Circuit Range/Performance Problem

P2122 ⁽⁴⁾

Throttle Pedal Position Sensor/Switch D Circuit Low Input

P2123 ⁽⁴⁾

Throttle Pedal Position Sensor/Switch D Circuit High Input

P2125 ⁽⁴⁾

Throttle Pedal Position Sensor/Switch E Circuit Malfunction

P2127 ⁽⁴⁾

Throttle Pedal Position Sensor/Switch E Circuit Low Input

P2128 ⁽⁴⁾

Throttle Pedal Position Sensor/Switch E Circuit High Input

P2135 ⁽⁴⁾

Throttle Position Sensor/Switch "A"/"B" Voltage Correlation

P2138 ⁽⁴⁾

Throttle Pedal Position Sensor/Switch "D"/"E" Voltage Correlation

P2195 ⁽⁷⁾

Oxygen Sensor Signal Stuck Lean (B1, S1)

P2196 ⁽⁷⁾

Oxygen Sensor Signal Stuck Rich (B1, S1)

P2197 ⁽⁷⁾

Oxygen Sensor Signal Stuck Lean (B2, S1)

P2198 ⁽⁷⁾

Oxygen Sensor Signal Stuck Rich (B2, S1)

P2237 ⁽⁷⁾

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

P2238 ⁽⁷⁾

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

P2239 ⁽⁷⁾

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

P2240 ⁽⁷⁾

Oxygen Sensor Pumping Current Circuit Open (A/F Sensor) (B2, S1)

P2241 ⁽⁷⁾

Oxygen Sensor Pumping Current Circuit Low (A/F Sensor) (B2, S1)

P2242 ⁽⁷⁾

Oxygen Sensor Pumping Current Circuit High (A/F Sensor) (B2, S1)

P2251 ⁽⁷⁾

Oxygen Sensor Reference Ground Circuit Open (A/F Sensor) (B1, S1)

P2252 ⁽⁷⁾

Oxygen Sensor Reference Ground Circuit Low (A/F Sensor) (B1, S1)

P2253 ⁽⁷⁾

Oxygen Sensor Reference Ground Circuit High (A/F Sensor) (B1, S1)

P2254 ⁽⁷⁾

Oxygen Sensor Reference Ground Circuit Open (A/F Sensor) (B2, S1)

P2255 ⁽⁷⁾

Oxygen Sensor Reference Ground Circuit Low (A/F Sensor) (B2, S1)

P2256 ⁽⁷⁾

Oxygen Sensor Reference Ground Circuit High (A/F Sensor) (B2, S1)

P2A00

Air/Fuel Sensor Circuit Slow Response (B1, S1)

P2A03

Air/Fuel Sensor Circuit Slow Response (B2, S1)

B2799 ⁽²⁾

Engine Immobilizer System Malfunction

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

⁽²⁾	DTC applies to models equipped with engine immobilizer system. MIL will not illuminate if DTC exists. For testing procedures, see appropriate ENGINE IMMOBILIZER SYSTEMS article in ACCESSORIES & EQUIPMENT.

⁽³⁾	DTC applies to models equipped with cruise control system. MIL will not illuminate if DTC exists. For testing procedures, see appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.

⁽⁴⁾	If this DTC is set, Engine Control Module (ECM) will enter fail-safe mode.

⁽⁵⁾	This DTC indicates a malfunction in the ignition primary circuit.

⁽⁶⁾	DTC applies to electronically controlled automatic transmission. For testing procedures, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

⁽⁷⁾	This DTC is related to A/F sensor, although the caption is HO2S.

⁽⁸⁾	MIL will not illuminate.

⁽⁹⁾	MIL will illuminate or blinks.

⁽¹⁰⁾	DTC applies to 4WD models. For testing procedures, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.