Code Definition

C1137 — ECU is Defective

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Generic

About C1137

C1137 is a manufacturer-specific chassis diagnostic trouble code. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

C1137 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC C1137 is a chassis system code indicating the control module, often the ABS, electronic parking brake, or chassis control ECU depending on the vehicle, has detected an internal fault and reported itself as defective. The module runs continuous internal self tests on its processor, memory, and output drivers, and sets this code when a self test fails or an internal circuit returns an implausible result. Because the fault is internal to the ECU it usually cannot be corrected by external wiring repairs, although a poor power supply or ground can cause a healthy module to misreport. When this ...

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