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OBD2 Trouble Codes

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

B0001
Body
High

Driver Airbag Deployment Control Circuit Short To Battery

B0002
Body
High

Driver Airbag Deployment Control Circuit Open/Short To Ground

B0003
Body
Moderate

Driver Frontal Stage 3 Deployment Control

B0004
Body
Moderate

Driver Knee Bolster Deployment Control

B0005
Body
Moderate

Collapsible Steering Column Deployment Control

B0010
Body
Moderate

Passenger Frontal Stage 1 Deployment Control

B0015
Body
Moderate

Left Front Seatbelt Pretensioner Deployment Control

B0020
Body
Moderate

Left Side Airbag Deployment Control

B0025
Body
Moderate

Right Curtain Deployment Control

B0028
Body
Moderate

Right Side Airbag Deployment Control

B0030
Body
Moderate

Second Row Left Side Airbag Deployment Control

B0033
Body
Moderate

Second Row Left Frontal Stage 3 Deployment Control

B0051
Body
Critical

Deployment Commanded — No Faults Present

B0052
Body
Critical

Deployment Commanded — Crash Data Stored

B0053
Body
Critical

Deployment Commanded with Deployment Loop DTCs Present

B0060
Body
Moderate

Driver Seatbelt Tension Sensor

B0071
Body
Moderate

First Row Center Seatbelt Pretensioner Deployment Control

B1000
Body
Moderate

Electronic Control Unit (ECU) Internal Malfunction

General Motors
B1001
Body
Moderate

SDM (Airbag Module) Option Configuration Error

General Motors
B1004
Body
Low

Keep Alive Memory (KAM) Error / ECU Internal Fault

General Motors
B1015
Body
Moderate

Passenger Airbag Deploy Loop Resistance High / VIN Data Error

General Motors
B1047
Body
Low

Ambient Air Temperature Sensor Circuit Low

Ford
B1049
Body
Moderate

Driver Airbag Module Circuit Open

Ford
B1200
Body
Low

Climate Control Push Button Circuit Open

Ford
B1213
Body
Moderate

Passenger Seatbelt Pretensioner Deployment Circuit Malfunction

Ford
B1231
Body
Low

AC Evaporator Temperature Sensor Circuit Open / Acceleration Threshold Exceeded

Ford
B1317
Body
Moderate

Battery Voltage High

Ford
B1318
Body
Moderate

Battery Voltage Low

B1319
Body
Moderate

Battery Voltage High

B1342
Body
Moderate

ECU (Electronic Control Unit) Is Defective

Ford
B1352
Body
Low

Ignition Key-In Circuit Failure

Ford
B1381
Body
Low

Oil Change Reset Button Circuit Open

Ford
B2799
Body
High

Engine Immobilizer System Malfunction

Toyota
B2960
Body
Moderate

Security System Sensor Data Incorrect But Valid

General Motors
C0020
Chassis
Moderate

ABS Pump Motor Control Circuit Malfunction

C0021
Chassis
Moderate

Brake Booster Performance Malfunction

C0022
Chassis
Moderate

Brake Booster Solenoid Circuit Malfunction

C0023
Chassis
Moderate

Stop Lamp Switch Circuit Malfunction

C0024
Chassis
Low

Front Left ABS Wheel Speed Sensor Signal Malfunction

C0025
Chassis
Low

Left Front Wheel Speed Sensor Circuit Open or Short to Battery

C0031
Chassis
Low

Left Front Wheel Speed Sensor Performance

C0032
Chassis
Low

Left Front Wheel Speed Sensor Supply Circuit Malfunction

C0033
Chassis
Low

Right Front Tone Wheel (Reluctor Ring) Fault

C0034
Chassis
Low

Right Front Wheel Speed Sensor Performance

C0035
Chassis
Moderate

Left Front Wheel Speed Sensor Circuit

C0040
Chassis
Moderate

Right Front Wheel Speed Sensor Circuit

C0041
Chassis
Moderate

Brake Pedal Switch "B" Circuit Malfunction

C0045
Chassis
Moderate

Left Rear Wheel Speed Sensor Circuit

C0046
Chassis
Moderate

Brake Pressure Sensor Circuit Malfunction

C0050
Chassis
Moderate

Right Rear Wheel Speed Sensor Circuit

C0051
Chassis
Low

Steering Wheel Position Sensor Circuit Malfunction

C0060
Chassis
Moderate

Left Front ABS Solenoid Valve Circuit Malfunction

C0061
Chassis
Low

Lateral Acceleration Sensor Circuit Malfunction

C0065
Chassis
Moderate

Left Front ABS Solenoid #2 Circuit Malfunction

C0070
Chassis
Moderate

Right Front ABS Solenoid #1 Circuit Malfunction

C0085
Chassis
Moderate

Left Rear ABS Solenoid #2 Circuit Malfunction

C0090
Chassis
Moderate

Right Rear ABS Solenoid #1 Circuit Malfunction

C0110
Chassis
Moderate

Pump Motor Circuit Malfunction

C0131
Chassis
Moderate

ABS/TCS Pressure Circuit Malfunction

C0161
Chassis
Moderate

ABS/TCS Brake Switch Circuit Malfunction

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