P2091 Fault Code

B Camshaft Position Actuator Control Circuit High Bank 1c

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2091 fault code indicates an issue with the camshaft position actuator control circuit for Bank 1. This code is generated when the Engine Control Module (ECM) detects that the camshaft position actuator is receiving a higher voltage than expected. When this occurs, it may lead to poor engine performance and efficiency, as well as potential damage to engine components if not addressed.

What are the symptoms of the P2091 code?

Common symptoms associated with the P2091 code may include:

• Illuminated Check Engine Light (CEL)
• Decreased engine performance and power output
• Erratic engine idling or stalling
• Poor fuel economy
• Possible roughness in the engine's performance

What causes the P2091 code?

Several factors can lead to the P2091 fault code, including:

• A faulty camshaft position actuator
• Open or shorted wiring in the control circuit
• Poor connection or corrosion in the connectors
• Issues with the ECM or engine control module
• Malfunctioning timing components or improper timing setup

How to fix P2091?

To resolve the P2091 fault code, follow these general steps:

1. Use an OBD-II scanner to confirm the fault code and check for any additional codes.
2. Inspect the camshaft position actuator and its wiring for damage or disconnections.
3. Test the electrical connections for corrosion or looseness.
4. Measure the voltage and resistance in the actuator circuit to ensure they are within specifications.
5. Replace the camshaft position actuator if it is determined to be faulty.
6. Clear the fault codes and perform a road test to ensure the issue is resolved.