DTC Descriptors

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTC C056D 00: ECU Hardware Performance
DTC C056D 3C: ECU Hardware Performance Internal Communications Failure
DTC C056D 59: ECU Hardware Performance
DTC C121C: EBCM Internal Communication Error
DTC C121E: EBCM Malfunction
DTC C121F: EBCM Unexpected Exception
DTC C123A: EBCM High End Timer Watchdog
DTC C123B: EBCM High End Timer Program Overflow
DTC C123C: EBCM High End Timer RAM Fault
DTC C123D: EBCM Solenoid Timeout
DTC C123E: EBCM High End Timer Periodic Interrupt
DTC C123F: EBCM Serial Peripheral Interface Inoperative
DTC C1255: Electronic Control Unit Performance
DTC C1256: Program ROM Checksum Error
DTC C126E: EBCM Stack Overrun
DTC C126F: EBCM Serial Peripheral Interface Performance
DTC C127C: EBCM Self Test Failed
DTC C127E: EBCM Module High Temperature
DTC C12C2: ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5: ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6: ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8: ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC: ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF: ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0: ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1: ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2: ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3: ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4: ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5: ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6: ABS Base Brake Open Solenoid Circuit Open
DTC C12D7: ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8: ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9: ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA: ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB: ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DE: ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF: ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2: ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3: ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4: ABS Proportioning Valve Solenoid Performance
DTC C12F5: ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6: ABS Right Rear Isolation Solenoid Performance