C1130 – Engine Signal 1

Meaning:

When the ABS control module has detected that there’s a problem with the ECU or PCM, the C1130 happens
The C1130 is triggered when the ABS control module has detected that there’s a problem with the ECU or PCM

The ABS control module has detected that there’s a problem with the engine control unit (ECU) or PCM.

Main Symptoms:

Possible Causes:

  • Defective ECU
  • Defective ABS actuator and/or ABS control module
  • Problem with CAN communication line
  • Damaged controller(s) due to abnormal system voltages

Diagnostic Steps:

  • Diagnose and address all other codes first before replacing ECU
  • Check whether system voltage is within manufacturer’s recommendation
  • Inspect wiring to ECU and ensure that there are no open, shorted or broken wires
  • Check all fuses and replace as necessary
  • Run tests on ABS module
  • Run tests on CAN line
  • Reset all codes and do test drive. If the code returns you may have to replace ECU

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