P1520 Mercury Code - Intake Manifold Runner Control Circuit Fault
Quick Answer
The P1520 code for Mercury vehicles indicates a fault in the intake manifold runner control circuit. Common causes include Faulty intake manifold runner control valve, Wiring issues or electrical connections related to the IMRC circuit, Vacuum leaks in the intake manifold. 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 Mercury indicates Intake Manifold Runner Control Circuit Fault.
- Common causes
- Common causes include Faulty intake manifold runner control valve, Wiring issues or electrical connections related to the IMRC circuit, Vacuum leaks in the intake manifold.
- 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 Mercury Description
The P1520 code for Mercury vehicles indicates a fault in the intake manifold runner control circuit. The intake manifold runner control (IMRC) system helps to optimize engine performance by adjusting the length of the intake manifold runners to improve airflow at different engine speeds. When this circuit fails, it can lead to poor engine performance, reduced fuel efficiency, and increased emissions. If not addressed, it could potentially cause long-term damage to the engine and other related components.
Common Causes of P1520 Mercury
- Faulty intake manifold runner control valve
- Wiring issues or electrical connections related to the IMRC circuit
- Vacuum leaks in the intake manifold
- Carbon buildup in the intake manifold runners
- Defective IMRC actuator or sensor
Symptoms of P1520 Mercury
- Check engine light illuminated on the dashboard
- Rough idle or stalling at low speeds
- Decreased power and acceleration
- Engine misfires
- Decreased fuel efficiency
How to Fix P1520 Mercury
- Begin by diagnosing the specific cause of the fault code using a scan tool to pinpoint the issue.
- Inspect the intake manifold runner control valve, actuator, and sensor for any signs of damage or wear.
- Check the wiring and electrical connections for any loose connections or corrosion.
- Clean out any carbon buildup in the intake manifold runners.
- Replace any faulty components such as the intake manifold runner control valve, actuator, or sensor as needed.
Cost to Fix P1520 Mercury
The cost to repair a P1520 code on a Mercury vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. It's recommended to contact local auto repair shops for accurate estimates based on your vehicle's make and model. Keep in mind that rates may vary based on location and other factors mentioned above.
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