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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1938 (Antilock Brake System - Hybrid (Hp2)) >> Diagnostic Information and Procedures >> DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB, or C12F7 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

C128F, C12F7, C121A, C012C 11 or C128C 

Internal sensor failure is detected.

C012C 01 or C12BA 

A short to battery is detected on the sensor signal circuit.

C012C 06 or C12B9 

A short to ground or open is detected signal circuit.

C012C 0F or C12BB 

Signal is erratic and changes faster than physically allowed.

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