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P0725

Symptom: CHECK GEARBOX warning lamp on.

P0725

Engine RPM Signal. Incorrect


Fault symptoms

CHECK GEARBOX warning lamp on.

Conditions

Input speed has exceeded 500 rpm once since ignition turned on.

Fault criteria

TCM receives information on the current engine speed on the bus from ECM. If ECM sends a message saying this information is incorrect, DTC P0725 will be generated.

Diagnostic help

The engine speed can be read using the diagnostic tool. - Select " Read Values / Activate " and " Engine Speed (Bus from Trionic)"

Check the wiring

Jiggle the wiring harness at several points and in different directions to reveal intermittent breaks and short circuits in the various leads. Observe the multimeter, test lamp or diagnostic instrument while carrying out this check.