LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 958 (Trailer Brake Control System) >> Diagnostic Information and Procedures >> Diagnostic Code Index
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Code Index

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX

DTC Description
DTC B3894  Stop Lamp Switch Circuit Plausibility Failure
DTC C0561  System Disabled Information Stored Invalid Serial Data Received
DTC C056D or C056E  ECU Hardware Performance
DTC C0800  Device Power Circuit Voltage
DTC C0845  Device Ignition 1 Circuit Voltage Below Threshold
DTC C0870  Device Voltage Reference Output 1 Circuit
DTC C0880  Device Voltage Reference Output 2 Circuit
DTC C0890  Device Voltage Reference Output 3 Circuit
DTC C1112  Trailer Brake Control Relay Low Control Circuit - Relay Control Active Low
DTC C1113  Trailer Brake Control Relay High Control Circuit Short to Battery
DTC C1114  Trailer Brake Control Solenoids Control Circuit-Trailer Auxiliary Supply Voltage
DTC C1115  Manual Trailer Brake Apply Request Switch Signal
DTC C1116  Manual Trailer Brake Apply Request Signal 1
DTC C1117  Manual Trailer Brake Apply Request circuit Signal 2-Redundant Manual Apply Signal
DTC C1118  Trailer Brake Control Sensitivity Switch Circuit
DTC C1119  Trailer Brake Control Relay Feedback Circuit