P0473
Exhaust Pressure Sensor A Circuit High
P0473 is an OBD-II diagnostic trouble code meaning: Exhaust Pressure Sensor A Circuit High. Common causes: malfunction of the exhaust gas pressure sensor, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine idling
Causes
- Malfunction of the exhaust gas pressure sensor
- Open or short circuit in wiring harness
- Poor contact in sensor connectors
- ECU malfunction
How to Fix
- Check the integrity of the wiring harness and sensor connectors
- Check sensor resistance and voltage according to manufacturer specifications
- Replace exhaust gas pressure sensor if necessary
- Check and, if necessary, replace the computer
Related codes
Error P0473 by Vehicle Brand
FAQ
What does the P0473 code mean?
P0473 is an OBD-II diagnostic trouble code that indicates: Exhaust Pressure Sensor A Circuit High
What causes a P0473 error code?
The most common causes of P0473 include: Malfunction of the exhaust gas pressure sensor; Open or short circuit in wiring harness; Poor contact in sensor connectors; ECU malfunction.
How do I fix a P0473 diagnostic trouble code?
To fix P0473: Check the integrity of the wiring harness and sensor connectors. Check sensor resistance and voltage according to manufacturer specifications. Replace exhaust gas pressure sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0473?
Limited driving only, diagnose soon
How much does it cost to fix P0473?
The estimated repair cost for P0473 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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