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TCM EDC16 / P1805 00

Symptom: Message appears in display.

  P1805 00


ECM Missing on Bus

Fault symptom

Message appears in display.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Engine running and not in limp home mode.
Voltage is over 9V but under 16V

Fault criteria:

The control module has no communication with ECM.

System reaction to a fault:

Limp home

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

Electrical fault on bus leads or in the component.