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 464 (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 Saturn Vue. 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	B1001 Option Configuration Error
DTC B1372	DTC B1372 Device Ignition 1 (Run/Crank) Circuit Low
DTC B1382	DTC B1382 Device Ignition 2 (Acc/Run) Circuit Low
DTC U0073	High Speed CAN Communication Bus
DTC U0100-U0299	DTC U0100 Lost Communication With Engine Control Module (ECM)
DTC U1000	Class 2 Data Link Malfunction
DTC U1001-U1254	Module U1XXX Error
DTC U1300, U1301, or U1305	DTC U1300 Class 2 Data Link Low DTC U1301 Class 2 Data Link High
DTC U2100	Controller Area Network (CAN) Bus Communication
DTC U2102 or U2103	DTC U2102 More Controllers On Bus Than Programmed DTC U2103 Fewer Controllers On Bus Than Programmed
DTC U2104	Controller Area Network (CAN) Bus Reset Counter Overrun
DTC U2105-U2199	DTC U2105 Lost Communication With Engine Control Module (ECM) DTC U2106 Lost Communication With Transmission Control Module (TCM) DTC U2107 Lost Communication With Body Control Module (BCM) DTC U2108 Lost Communication With Electronic Brake Control Module (EBCM)

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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.