P1351 – OBD-II DTC

OBD-II DTC P1351 – Fuel Level Sensor B Circuit Malfunction

DTC P1351 meaning

DTC P1351 refers to a malfunction in the Fuel Level Sensor B Circuit. This diagnostic trouble code indicates that the Engine Control Module (ECM) has detected an issue with the signal from the fuel level sensor, which is responsible for measuring the amount of fuel in the tank. The “B” designation typically refers to a specific sensor or circuit within a multi-sensor system.

DTC P1351 symptoms

Common symptoms associated with DTC P1351 may include:

• Inaccurate fuel gauge readings
• Fuel gauge stuck at empty or full
• Check Engine Light illuminated
• Possible engine performance issues due to incorrect fuel level readings

DTC P1351 causes

Several factors can lead to the triggering of DTC P1351, including:

• Faulty fuel level sensor
• Wiring issues, such as shorts or open circuits in the sensor circuit
• Corroded or loose electrical connections
• Faulty Engine Control Module (ECM)
• Issues with the fuel tank or fuel sender unit

DTC P1351 seriousness

The seriousness of DTC P1351 can vary. While it may not cause immediate safety concerns, it can lead to:

• Inaccurate fuel level readings, resulting in running out of fuel unexpectedly
• Potential engine performance issues
• Increased emissions due to improper fuel management

It is advisable to address this code promptly to avoid further complications.

How to diagnose DTC P1351

To diagnose DTC P1351, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P1351 code.
2. Inspect the fuel level sensor and its wiring for visible damage or corrosion.
3. Check the electrical connections for tightness and cleanliness.
4. Test the fuel level sensor with a multimeter to ensure it is functioning within specifications.
5. Examine the ECM for any software updates or faults.
6. Clear the code and perform a road test to see if the code reappears.

How to fix DTC P1351 step-by-step instructions

To fix DTC P1351, follow these steps:

1. Inspect and repair any damaged wiring or connectors related to the fuel level sensor.
2. Replace the fuel level sensor if it is found to be faulty.
3. Ensure all electrical connections are secure and free of corrosion.
4. Check for any ECM updates or reprogramming that may be necessary.
5. Clear the DTC using an OBD-II scanner.
6. Test drive the vehicle to ensure the issue is resolved and the code does not return.

How to erase DTC P1351

To erase DTC P1351, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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