P2543
Low Pressure Fuel System Sensor Circuit Intermittent
P2543 is an OBD-II diagnostic trouble code meaning: Low Pressure Fuel System Sensor Circuit Intermittent. Common causes: low fuel pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Unstable engine idling
- Reduced engine power
- Dips during acceleration
- Increased fuel consumption
- Check Engine Light Illuminates
Causes
- Low fuel pressure sensor malfunction
- Open or short circuit in the sensor circuit
- Oxidation of contacts in connectors
- Problems with the low pressure fuel pump
- Fuel pump relay malfunction
How to Fix
- Check the integrity of the wiring to the sensor
- Clean the contacts in the sensor connectors
- Check the functionality of the low fuel pressure sensor
- Check the operation of the low pressure fuel pump
- Replace sensor if necessary
Related codes
Error P2543 by Vehicle Brand
FAQ
What does the P2543 code mean?
P2543 is an OBD-II diagnostic trouble code that indicates: Low Pressure Fuel System Sensor Circuit Intermittent
What causes a P2543 error code?
The most common causes of P2543 include: Low fuel pressure sensor malfunction; Open or short circuit in the sensor circuit; Oxidation of contacts in connectors; Problems with the low pressure fuel pump.
How do I fix a P2543 diagnostic trouble code?
To fix P2543: Check the integrity of the wiring to the sensor. Clean the contacts in the sensor connectors. Check the functionality of the low fuel pressure sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2543?
Limited driving only, diagnose soon
How much does it cost to fix P2543?
The estimated repair cost for P2543 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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