P1538 Mercury Code - Intake Manifold Runner Control Stuck Open Bank 2
Quick Answer
The P1538 diagnostic trouble code for Mercury vehicles indicates that the Intake Manifold Runner Control (IMRC) for Bank 2 is stuck open. Common causes include Faulty IMRC actuator, Vacuum leak in the IMRC system, Stuck open intake manifold runner. 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
- P1538 Mercury indicates Intake Manifold Runner Control Stuck Open Bank 2.
- Common causes
- Common causes include Faulty IMRC actuator, Vacuum leak in the IMRC system, Stuck open intake manifold runner.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1538 Mercury Description
The P1538 diagnostic trouble code for Mercury vehicles indicates that the Intake Manifold Runner Control (IMRC) for Bank 2 is stuck open. The IMRC system is designed to vary the length of the intake runners in the intake manifold to optimize airflow and enhance engine performance at different RPM ranges. When the IMRC is stuck open in Bank 2, it can lead to an imbalance in the air-fuel mixture, affecting engine performance, fuel economy, and emissions.
Common Causes of P1538 Mercury
- Faulty IMRC actuator
- Vacuum leak in the IMRC system
- Stuck open intake manifold runner
- Wiring or connectivity issues in the IMRC system
- Carbon buildup in the intake manifold runners
Symptoms of P1538 Mercury
- Reduced power and acceleration
- Rough idle or engine misfires
- Poor fuel economy
- Stalling or hesitation during acceleration
- Illumination of the Check Engine Light
How to Fix P1538 Mercury
- Diagnose the issue using a scan tool to confirm the P1538 code and pinpoint the specific problem area.
- Inspect the IMRC actuator, vacuum lines, and intake manifold runners for any signs of damage or obstruction.
- Test the IMRC actuator to ensure it is functioning correctly and replace if necessary.
- Clean out any carbon buildup in the intake manifold runners.
- Clear the trouble code and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1538 Mercury
The typical repair costs for addressing a P1538 code on a Mercury vehicle can range from $200 to $500, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary based on location, vehicle make and model, and engine type. It's advisable to check with local auto repair shops for a more accurate estimate based on your specific circumstances.
Need more information about the P1538 Mercury code?
Need more information on how to fix the P1538 Mercury code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1538 Mercury code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1538 Mercury Code
No Frequently Asked Questions about P1538 Mercury Code found.
Discuss the causes and fixes for P1538 Mercury OBDII Code
Code P1538 Mercury comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.