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P0726, P0727

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK GEARBOX warning lamp on.

P0726, P0727


Engine RPM. Signal Faulty

Engine RPM. No Signal


Fault symptoms

CHECK GEARBOX warning lamp on.

Conditions

P0726: Engine speed above 7200 rpm for at least 10 seconds.

P0727: Gearbox input speed above 2000 rpm for more than 5 seconds and no engine speed signal.

Diagnostic help

The engine speed can be read from the engine management system using the diagnostic tool. Select " Data Display / Output Control (New)" 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.