P2252 Mercury Code - O2 Sensor Negative Current Control Circuit Low Bank 1 Sensor 1
Quick Answer
The P2252 diagnostic trouble code (DTC) for Mercury vehicles refers to an issue with the O2 sensor negative current control circuit on Bank 1 Sensor 1. Common causes include Faulty O2 sensor, Damaged wiring or connectors in the O2 sensor circuit, Exhaust leaks near the O2 sensor. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P2252 Mercury indicates O2 Sensor Negative Current Control Circuit Low Bank 1 Sensor 1.
- Common causes
- Common causes include Faulty O2 sensor, Damaged wiring or connectors in the O2 sensor circuit, Exhaust leaks near the O2 sensor.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code P2252 Mercury Description
The P2252 diagnostic trouble code (DTC) for Mercury vehicles refers to an issue with the O2 sensor negative current control circuit on Bank 1 Sensor 1. This sensor is responsible for measuring the oxygen content in the exhaust gases, providing crucial data to the engine control module (ECM) for proper air-fuel ratio adjustments. When the O2 sensor negative current control circuit is registering a low voltage, it indicates a potential problem with the sensor's ability to accurately detect oxygen levels in the exhaust.
Common Causes of P2252 Mercury
- Faulty O2 sensor
- Damaged wiring or connectors in the O2 sensor circuit
- Exhaust leaks near the O2 sensor
- Issues with the ECM
- Contaminated or poor-quality fuel affecting sensor readings
Symptoms of P2252 Mercury
- Check Engine Light illuminated on the dashboard
- Poor fuel economy
- Rough idling or stalling
- Increased emissions
- Reduced engine power
How to Fix P2252 Mercury
- Diagnose the O2 sensor circuit for faults using a multimeter or scan tool
- Inspect wiring and connectors for damage or corrosion, repairing or replacing as necessary
- Check for exhaust leaks near the O2 sensor and repair if found
- Replace the O2 sensor if testing reveals it is faulty
- Clear the DTC and perform a test drive to ensure the issue has been resolved
Cost to Fix P2252 Mercury
The typical repair cost for addressing a P2252 code on a Mercury vehicle can range from $150 to $400, including parts and labor. However, prices may vary depending on the specific model of the vehicle, the location of the repair shop, and the extent of the issue. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on your individual circumstances.
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