P142F Mercury Code - Exhaust Gas Recirculation Sensor 'D' Circuit Intermittent/Erratic
Quick Answer
The P142F diagnostic trouble code for Mercury vehicles specifically refers to an issue with the Exhaust Gas Recirculation (EGR) Sensor 'D' Circuit being intermittent or erratic. Common causes include Faulty EGR sensor 'D', Wiring or connection issues in the EGR sensor 'D' circuit, ECM software or calibration issues. 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
- P142F Mercury indicates Exhaust Gas Recirculation Sensor 'D' Circuit Intermittent/Erratic.
- Common causes
- Common causes include Faulty EGR sensor 'D', Wiring or connection issues in the EGR sensor 'D' circuit, ECM software or calibration issues.
- 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 P142F Mercury Description
The P142F diagnostic trouble code for Mercury vehicles specifically refers to an issue with the Exhaust Gas Recirculation (EGR) Sensor 'D' Circuit being intermittent or erratic. The EGR system plays a crucial role in reducing harmful emissions by recirculating a portion of the engine's exhaust gases back into the intake manifold for combustion. The EGR sensor 'D' is responsible for monitoring the EGR system's operation and providing feedback to the engine control module (ECM) to ensure proper functionality.
Common Causes of P142F Mercury
- Faulty EGR sensor 'D'
- Wiring or connection issues in the EGR sensor 'D' circuit
- ECM software or calibration issues
- Carbon buildup in the EGR system
- Vacuum leaks affecting EGR system operation
Symptoms of P142F Mercury
- Check engine light illuminated
- EGR system warning light activated
- Reduced power output
- Rough idling or stalling
- Decreased fuel efficiency
How to Fix P142F Mercury
- Perform a comprehensive diagnostic scan to confirm the P142F code and identify the specific cause of the issue.
- Inspect the EGR sensor 'D' and its wiring for any signs of damage or corrosion. Replace the sensor if necessary.
- Check and repair any wiring or connection issues in the EGR sensor 'D' circuit.
- Clean the EGR system components to remove any carbon deposits that may be affecting operation.
- Reset the ECM and perform a test drive to ensure the issue has been resolved.
Cost to Fix P142F Mercury
The cost of repairing a P142F code for 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 between $200 and $500 for parts and labor to address this problem. However, it's essential to note that diagnostic time and labor rates at auto repair shops can fluctuate based on factors such as location, vehicle make and model, and engine type. It's advisable to obtain a detailed estimate from a qualified mechanic or repair shop to determine the precise cost for your vehicle.
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