P1091 Code - VVEL Actuator Motor Relay Circuit
Quick Answer
The P1091 diagnostic trouble code refers to the VVEL (Variable Valve Event and Lift) actuator motor relay circuit. Common causes include Faulty VVEL actuator motor relay, Wiring or connector issues in the VVEL actuator motor relay circuit, Electrical system malfunctions. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1091 indicates VVEL Actuator Motor Relay Circuit.
- Common causes
- Common causes include Faulty VVEL actuator motor relay, Wiring or connector issues in the VVEL actuator motor relay circuit, Electrical system malfunctions.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1091 Description
The P1091 diagnostic trouble code refers to the VVEL (Variable Valve Event and Lift) actuator motor relay circuit. The VVEL system is a technology used in some modern engines to control the opening and closing of the intake valves, allowing for better performance and fuel efficiency. The actuator motor relay is responsible for providing power to the VVEL actuator motor, which in turn controls the valve timing.
Common Causes of P1091
- Faulty VVEL actuator motor relay
- Wiring or connector issues in the VVEL actuator motor relay circuit
- Electrical system malfunctions
- Computer module failure
- VVEL actuator motor failure
Symptoms of P1091
- Engine misfires
- Rough idle
- Reduced power
- Poor fuel economy
- Check engine light illuminated
How to Fix P1091
- Diagnose the root cause of the issue using a diagnostic scanner to pinpoint the exact problem.
- Inspect the wiring and connectors in the VVEL actuator motor relay circuit for any damage or corrosion.
- Test the VVEL actuator motor relay and the VVEL actuator motor for functionality.
- Replace any faulty components, such as the relay, motor, or wiring.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1091
The cost of repairing a P1091 code can vary depending on the exact cause of the issue and the labor rates at the auto repair shop. On average, the repair costs for this type of issue can range from $150 to $500, including parts and labor. It's important to note that prices can differ based on location, vehicle make and model, and the specific repairs needed. It's recommended to consult with a professional mechanic for a more accurate cost estimate.
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Code P1091 Information for Specific Makes
- P1091 BMW — Pre-Catalyst Fuel Trim Too Rich Bank 1
- P1091 Infiniti — VVEL Actuator Motor Relay Circuit
- P1091 MINI — Pre-Catalyst Fuel Trim Too Rich Bank 1
- P1091 Nissan — VVEL Actuator Motor Relay Circuit
- P1091 Subaru — Tumble Generated Valve System 1 Valve Close
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