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OBD2 Trouble Codes

Browse 543 diagnostic trouble codes — each with symptoms, causes, cost estimates, and repair guidance.

C0236
Chassis
Moderate

Rear Wheel Speed Circuit Range/Performance

C0242
Chassis
Moderate

PCM Indicated Traction Control Malfunction

C0265
Chassis
Moderate

EBCM Motor Relay Circuit Malfunction

C0550
Chassis
Moderate

Electronic Control Unit (ECU) Performance

C0561
Chassis
Moderate

System Disabled Information Stored

C1095
Chassis
Moderate

ABS Hydraulic Pump Motor Circuit Failure

Ford
C1201
Chassis
Moderate

Engine Control System Malfunction

C1241
Chassis
Moderate

Low Battery Positive Voltage at ABS Control Module

Toyota
C1256
Chassis
High

Accumulator Low Pressure

Toyota
P0008
Powertrain
Moderate

Engine Position System Performance (Bank 1)

P0014
Powertrain
Moderate

Exhaust Camshaft Position Timing Over-Advanced (Bank 1)

P0087
Powertrain
Moderate

Fuel Rail/System Pressure Too Low

P0100
Powertrain
Moderate

Mass or Volume Air Flow Circuit Malfunction

P0101
Powertrain
Moderate

Mass or Volume Air Flow Circuit Range/Performance

P0102
Powertrain
Moderate

Mass or Volume Air Flow Circuit Low Input

P0103
Powertrain
Moderate

Mass or Volume Air Flow Circuit High Input

P0104
Powertrain
Moderate

Mass or Volume Air Flow Circuit Intermittent

P0105
Powertrain
Moderate

Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction

P0106
Powertrain
Moderate

Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance

P0107
Powertrain
Moderate

Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

P0108
Powertrain
Moderate

Manifold Absolute Pressure/Barometric Pressure Circuit High Input

P0109
Powertrain
Moderate

Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent

P0110
Powertrain
Low

Intake Air Temperature Circuit Malfunction

P0111
Powertrain
Low

Intake Air Temperature Circuit Range/Performance

P0112
Powertrain
Low

Intake Air Temperature Circuit Low Input

P0113
Powertrain
Moderate

Intake Air Temperature Sensor 1 Circuit High

P0114
Powertrain
Low

Intake Air Temperature Circuit Intermittent

P0115
Powertrain
Moderate

Engine Coolant Temperature Circuit Malfunction

P0116
Powertrain
Moderate

Engine Coolant Temperature Circuit Range/Performance

P0117
Powertrain
Moderate

Engine Coolant Temperature Sensor 1 Circuit Low Input

P0118
Powertrain
Moderate

Engine Coolant Temperature Sensor 1 Circuit High

P0119
Powertrain
Moderate

Engine Coolant Temperature Circuit Intermittent

P0120
Powertrain
Moderate

Throttle/Pedal Position Sensor/Switch A Circuit Malfunction

P0121
Powertrain
Moderate

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

P0122
Powertrain
Moderate

Throttle/Pedal Position Sensor/Switch A Circuit Low Input

P0123
Powertrain
Moderate

Throttle/Pedal Position Sensor/Switch A Circuit High Input

P0124
Powertrain
Moderate

Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

P0125
Powertrain
Low

Insufficient Coolant Temperature for Closed Loop Fuel Control

P0126
Powertrain
Low

Insufficient Coolant Temperature for Stable Operation

P0127
Powertrain
Moderate

Intake Air Temperature Too High

P0128
Powertrain
Moderate

Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)

P0129
Powertrain
Low

Barometric Pressure Too Low

P0130
Powertrain
Moderate

O2 Sensor Circuit Malfunction (Bank 1, Sensor 1)

P0131
Powertrain
Moderate

O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)

P0132
Powertrain
Moderate

O2 Sensor Circuit High Voltage (Bank 1, Sensor 1)

P0133
Powertrain
Moderate

O2 Sensor Circuit Slow Response (Bank 1, Sensor 1)

P0134
Powertrain
Moderate

O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)

P0135
Powertrain
Moderate

O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)

P0136
Powertrain
Low

O2 Sensor Circuit Malfunction (Bank 1, Sensor 2)

P0137
Powertrain
Low

O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)

P0138
Powertrain
Moderate

O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)

P0139
Powertrain
Low

O2 Sensor Circuit Slow Response (Bank 1, Sensor 2)

P0140
Powertrain
Low

O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 2)

P0141
Powertrain
Moderate

O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

P0142
Powertrain
Low

O2 Sensor Circuit Malfunction (Bank 1, Sensor 3)

P0143
Powertrain
Low

O2 Sensor Circuit Low Voltage (Bank 1, Sensor 3)

P0144
Powertrain
Low

O2 Sensor Circuit High Voltage (Bank 1, Sensor 3)

P0145
Powertrain
Low

O2 Sensor Circuit Slow Response (Bank 1, Sensor 3)

P0146
Powertrain
Low

O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 3)

P0147
Powertrain
Low

O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 3)

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