The P2091 code indicates that the engine control module has detected a voltage signal from the Bank 1 exhaust camshaft actuator circuit that is higher than the expected range. This typically suggests an electrical open circuit or a failure within the actuator solenoid itself.
An internal electrical failure or open winding within the Bank 1 exhaust camshaft actuator solenoid.
Frayed, broken, or burnt wires in the circuit leading to the actuator, causing an open circuit.
Corrosion or loose pins at the solenoid connector preventing a proper electrical connection.
Severe oil sludge or debris blocking the actuator, which can occasionally lead to electrical stress or failure.
A failure in the engine control module's driver circuit for the actuator.
No, P2091 is an electrical circuit code. It refers to the solenoid that controls the camshaft position, not the mechanical condition of the camshaft itself.
While dirty oil can cause VVT malfunctions, a 'Circuit High' code usually indicates an electrical failure. However, clean oil is necessary for the system to function once the electrical issue is resolved.
No. It is very rare for the PCM to be the cause of P2091. The issue is almost always located in the solenoid or the wiring harness.