Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-P034900

Condition




The camshaft houses a gearwheel with a number of teeth (the teeth are positioned between each segment) that are read by the engine control module (ECM) via the camshaft position sensor. The diagnostic trouble code is generated if the control module detects too few segments for a certain number of crankshaft revolutions.
The diagnostic trouble code can be diagnosed by the control module when the engine is running and engine speed exceeds a certain value.

Substitute value
- Engine speed sensor signal.

Possible source
- Open-circuit on the signal cable.
- The signal cable is short-circuited to ground.
- The signal cable is short-circuited to voltage.
- Damaged mass air flow sensor.

Fault symptom[s]
- Driving/Poor performance/lacks power/At take off
- Driving/Poor performance/lacks power
- Driving/Hesitates/surges/Unsure when/at all times
- Driving/Hesitates/surges/During acceleration
- Driving/Hesitates/surges/During deceleration
- Driving/Hesitates/surges/At steady speed