P0471
Exhaust Pressure Sensor A Circuit Range/Performance
P0471 is an OBD-II diagnostic trouble code meaning: Exhaust Pressure Sensor A Circuit Range/Performance. Common causes: malfunction of the exhaust gas pressure sensor, open or shorted sensor wiring harness. Estimated repair cost: $33–111.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Increased fuel consumption
- Unstable idling
Causes
- Malfunction of the exhaust gas pressure sensor
- Open or shorted sensor wiring harness
- Poor contact in the sensor connector
- Mechanical damage to the sensor or its tubes
- Problems with power or grounding of the sensor circuit
How to Fix
- Visual inspection of the sensor and its connections
- Checking the integrity of the wiring harness
- Measuring the sensor supply voltage
- Checking the sensor signal with a scanner or oscilloscope
- Replacing a faulty sensor if necessary
Related codes
Error P0471 by Vehicle Brand
FAQ
What does the P0471 code mean?
P0471 is an OBD-II diagnostic trouble code that indicates: Exhaust Pressure Sensor A Circuit Range/Performance
What causes a P0471 error code?
The most common causes of P0471 include: Malfunction of the exhaust gas pressure sensor; Open or shorted sensor wiring harness; Poor contact in the sensor connector; Mechanical damage to the sensor or its tubes.
How do I fix a P0471 diagnostic trouble code?
To fix P0471: Visual inspection of the sensor and its connections. Checking the integrity of the wiring harness. Measuring the sensor supply voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0471?
Limited driving only, diagnose soon
How much does it cost to fix P0471?
The estimated repair cost for P0471 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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