This code indicates the powertrain control module (PCM) has detected a voltage level above specification on the Bank 1 camshaft position sensor signal circuit. A 'high' reading usually means the signal wire is shorted to a voltage source or the sensor has an internal short, preventing the PCM from receiving accurate camshaft timing data.
The wiring harness between the camshaft position sensor and PCM has chafed against metal edges or melted near hot components, creating a short to a 12-volt supply or reference voltage.
Internal short circuit within the sensor causing it to output excessive voltage to the signal circuit regardless of camshaft position.
Moisture intrusion, bent pins, or damaged terminals in the sensor or PCM connectors allowing the signal wire to contact voltage.
The sensor's 5-volt reference supply wire has shorted to the signal wire within the harness or sensor, raising signal voltage above normal.
Rare failure of the PCM's internal input circuitry causing it to incorrectly interpret a normal signal as high voltage, or inadvertently supplying voltage on the signal circuit.
It is not advisable. The engine may stall unexpectedly without warning, fail to restart, or run with incorrect timing that could damage the catalytic converter.
No. This code indicates an electrical circuit fault, not mechanical timing failure. However, the sensor that monitors camshaft position may be located in an area requiring timing component access for replacement.
Only after exhaustively testing the wiring and sensor. PCM failure causing this specific code is uncommon; replacing the computer is rarely the correct fix for a circuit high condition.
'Output' refers to the electrical signal output by the camshaft position sensor and sent to the PCM. The PCM monitors this output voltage, and a 'high' reading indicates the circuit voltage exceeds the expected parameter range.