Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Pontiac Aztek FWDFACTORY OEM SERVICE PROCEDURE
Anti-Lock Brake DTCS
ANTILOCK BRAKE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B2747 | Traction Control Switch Circuit Low |
| DTC C0035, C0040, C0041, C0045, C0046, C0050, C0051 | C0035: LF Wheel Speed Circuit Malfunction; C0040: RF Wheel Speed Circuit Malfunction; C0041: RF Wheel Speed Sensor Circuit Range/Performance (EBCM); C0045: LR Wheel Speed Circuit Malfunction; C0046: LR Wheel Speed Sensor Circuit Range/Performance (EBCM); C0050: RR Wheel Speed Circuit Malfunction; C0051: LF Wheel Speed Sensor Circuit Range/Performance (EBCM) |
| DTC C0060, C0065, C0070, C0075, C0080, C0085, C0090, C0095 | C0060: LF ABS Solenoid #1 Circuit Malfunction; C0065: LF ABS Solenoid #2 Circuit Malfunction; C0070: RF ABS Solenoid #1 Circuit Malfunction; C0075: RF ABS Solenoid #2 Circuit Malfunction; C0080: LR ABS Solenoid #1 Circuit Malfunction; C0085: LR ABS Solenoid #2 Circuit Malfunction; C0090: RR ABS Solenoid #1 Circuit Malfunction; C0095: RR ABS Solenoid #2 Circuit Malfunction |
| DTC C0110 | Pump Motor Circuit Malfunction |
| DTC C0121 | Valve Relay Circuit Malfunction |
| DTC C0141, C0146, C0151, C0156 | C0141: Left TCS Solenoid #1 Circuit Malfunction; C0146: Left TCS Solenoid #2 Circuit Malfunction; C0151: Right TCS Solenoid #1 Circuit Malfunction; C0156: Right TCS Solenoid #2 Circuit Malfunction |
| DTC C0161 | ABS/TCS Brake Switch Circuit Malfunction |
| DTC C0235, C0236, C0237, P1504 | C0235: Rear Wheel Speed Signal Circuit Open; C0236: Rear Wheel Speed Signal Circuit Missing; C0237: Rear Wheel Speed Signal Erratic; P1504: Vehicle Speed Output Circuit |
| DTC C0240 | PCM Traction Control Not Allowed (ETS) |
| DTC C0241, P1571 | C0241: EBCM Control Valve Circuit; P1571: TCS PWM Circuit No Frequency |
| DTC C0244 | PWM Delivered Torque Malfunction; P1689: Traction Control Delivered Torque Control Circuit |
| DTC C0245 | Wheel Speed Sensor Frequency Error |
| DTC C0550 | ECU Malfunction - Internal Write/Checksum Malfunction |
| DTC C0565 | EBCM Detects Digits 5 Of VIN Is Incorrect |
| DTC C0896 | Electronic Suspension Control (ESC) Voltage Is Outside Normal Range Of 9-15.5 Volts |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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