P1520 Lincoln Code - Intake Manifold Runner Control Circuit Fault
Quick Answer
The P1520 diagnostic trouble code for Lincoln vehicles indicates a fault in the Intake Manifold Runner Control (IMRC) circuit. Common causes include Failed IMRC actuator, Faulty IMRC control module, Damaged wiring or connectors in the IMRC circuit. 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
- P1520 Lincoln indicates Intake Manifold Runner Control Circuit Fault.
- Common causes
- Common causes include Failed IMRC actuator, Faulty IMRC control module, Damaged wiring or connectors in the IMRC circuit.
- 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 P1520 Lincoln Description
The P1520 diagnostic trouble code for Lincoln vehicles indicates a fault in the Intake Manifold Runner Control (IMRC) circuit. The IMRC system is responsible for controlling the intake manifold runners' length, optimizing airflow to the engine for improved performance and fuel efficiency. When the IMRC circuit is compromised, it can lead to a range of issues affecting the vehicle's performance.
Common Causes of P1520 Lincoln
- Failed IMRC actuator
- Faulty IMRC control module
- Damaged wiring or connectors in the IMRC circuit
- Corrosion or debris affecting the IMRC components
- Software issues in the vehicle's computer affecting IMRC operation
Symptoms of P1520 Lincoln
- Check Engine Light illuminated on the dashboard
- Decreased engine performance
- Reduced fuel efficiency
- Rough idling
- Engine misfires
How to Fix P1520 Lincoln
- Begin by diagnosing the specific cause of the P1520 code using a diagnostic scanner to pinpoint the faulty component.
- Inspect the IMRC actuator for proper operation and replace it if necessary.
- Check the IMRC control module for any signs of damage or malfunction and replace if needed.
- Inspect the wiring and connectors in the IMRC circuit for corrosion, damage, or loose connections, repairing or replacing them as required.
- Clear the diagnostic trouble codes, reset the Check Engine Light, and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1520 Lincoln
The typical repair costs for addressing a P1520 code on a Lincoln vehicle can range from $200 to $600, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to check with local shops for a more accurate estimate. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops often offer more competitive prices.
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Frequently Asked Questions about P1520 Lincoln Code
What does the OBDII code P1520 mean on a Lincoln?
P1520 indicates an Intake Manifold Runner Control (IMRC) Circuit Fault, meaning the system that adjusts airflow in the intake manifold is not functioning properly.
What are the common symptoms of P1520 on a Lincoln?
Symptoms may include reduced engine performance, poor fuel efficiency, rough idling, and the Check Engine Light turning on.
What causes the P1520 code on a Lincoln?
Common causes include a faulty IMRC actuator, damaged wiring or connectors, or a malfunctioning intake manifold control solenoid.
Can I drive my Lincoln with the P1520 code?
While you can drive with this code, performance and fuel efficiency may be affected. Prolonged driving without repairs could lead to additional engine issues.
How can I diagnose the P1520 code on a Lincoln?
Start by inspecting the IMRC actuator, wiring, and connectors for damage or wear. Use a multimeter to check for circuit continuity and ensure proper voltage is reaching the actuator.
How do I fix the P1520 code on a Lincoln?
Repairs may include replacing the IMRC actuator, repairing or replacing damaged wiring, or cleaning the intake manifold runners if they’re stuck.
How much does it cost to repair a P1520 code on a Lincoln?
Repair costs vary but typically range between $150 and $500 depending on whether the actuator, wiring, or other components need replacement.
What tools are needed to fix the P1520 code on a Lincoln?
Basic tools include a multimeter for electrical testing, a diagnostic scanner to clear the code, and potentially wrenches and screwdrivers to replace the actuator.
Can a dirty intake manifold cause the P1520 code on a Lincoln?
Yes, carbon buildup can cause the intake manifold runners to stick, leading to the IMRC circuit fault. Cleaning the intake manifold may resolve the issue.
Will clearing the P1520 code fix the issue permanently?
No, clearing the code will temporarily remove the Check Engine Light, but the underlying issue needs to be repaired to prevent the code from returning.
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