P2091 refers to a diagnostic trouble code indicating an issue with the control circuit for the B camshaft position actuator on Bank 1 where there is a high voltage detected.
P2091 B Camshaft Position Actuator Control Circuit High Bank 1
Code symptoms P2091.
– Check engine light is illuminated on the dashboard
– Engine may run rough or misfire
– Reduced fuel efficiency
– Difficulty starting the engine
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P2091.
– Faulty camshaft position actuator
– Wiring issues or connectors related to the camshaft position actuator
– Engine control module (ECM) malfunction
– Incorrect or faulty camshaft position sensor
– Timing chain or belt issues affecting the camshaft position actuator circuit
Code Solutions P2091.
1. Inspect the wiring harness and connectors for any damage or corrosion that may be causing a poor connection. Repair or replace any damaged components.
2. Check the camshaft position actuator for proper operation and replace if necessary.
3. Test the voltage and ground at the camshaft position actuator control circuit to ensure proper levels are being received. Repair any issues found.
4. Clear the error code and reset the engine control module to see if the issue persists. If the code reappears, further diagnosis may be needed.
5. Update the engine control module software to the latest version to potentially resolve any software-related issues causing the fault code.