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.
2001 Pontiac Aztek Base, FWDFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B0008 | In Park Switch Circuit High |
| DTC B1000 | ECU Malfunction |
| DTC B1004 | Loss of Keep Alive Memory |
| DTC B1007 | EEPROM Write Error |
| DTC B1009 | EEPROM Checksum Error |
| DTC B1440 | Power Mode Master Input Circuits Mismatch |
| DTC B1477 | Retained Accessory Power Circuit Low |
| DTC B1478 | Retained Accessory Power Circuit High |
| DTC U1000 & U1255 | Class 2 Communication Malfunction |
| DTC U1001 through U1254 | Lost Communication With XXX (See module identification table under link heading to determine which module is indicated) |
| DTC U1300 | Class 2 Data Link Low |
| DTC U1301 | Class 2 Data Link High |
| DTC U1305 | Class 2 Data Link Shorted |
| DTC U1500 | Inter-Device Dedicated Bus Malfunction |
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.