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.
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HOMESERVICE MANUALSPONTIAC2006G6 GTP, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 389 (COMPUTER/INTEGRATING SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2006 Pontiac G6 GTP, 2D Coupe, Standard
Diagnostic Code Index
2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B1000 | Electronic Control Unit (ECU) Performance |
| DTC B1001 | Option Configuration Error |
| DTC B1004 | Electronic Control Unit Identification Circuit |
| DTC B1007 | EEPROM Read/Write Error |
| DTC B1009 | EEPROM Checksum Mismatch |
| DTC B1013 | Calibration Read Only Memory (ROM) Checksum Error |
| DTC B1370 | Device Ignition 1 (ON and START) Circuit |
| DTC B1380 | Device Ignition ACCESSORY Circuit |
| DTC B1385 | Device Ignition START Circuit |
| DTC B1390 | Device Voltage Reference Input Circuit |
| DTC B1420 | Device Voltage |
| DTC B1428 | Ignition-Switched Power Relay Circuit |
| DTC B1433 | Ignition-Switched Power Relay 2 Circuit |
| DTC B1475 | Retained Accessory Power Circuit |
| DTC C0550 | Electronic Control Unit (ECU) Performance |
| DTC P2535 | Ignition One Voltage High |
| DTC U1000 and U1255 |
|
| DTC U1001-U1254 | DTC U1XXX Lost communication With XXX Module (See Table In DTC Testing |
| DTC U1300, U1301 or U1305 |
|
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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.