P0462 and P0463 Fuel Sensor Circuit Issues in 2015 Dodge Caravan After Flood Damage
I recently purchased a 2015 Dodge Caravan that appears to have been exposed to flooding. The vehicle now displays check engine light with diagnostic codes P0462 and P0
The vehicle seems to have experienced flood damage, possibly with water reaching the lower sections of the Caravan. While no other error codes are present, it's important to investigate the fuel sensor circuit thoroughly. Start by checking voltage and resistance in the fuel sensor circuit. Begin by disconnecting the connector from the fuel level sensor to inspect for corrosion or contamination. Potential causes for P0463 include: an open or shorted signal circuit to the fuel sender (shorted to B+ battery voltage), a broken ground circuit or high-resistance grounding due to rust or missing ground strap on the fuel tank, structural damage to the fuel tank affecting the fuel level reading, an open resistor in the fuel lever sensor's ground path, or a faulty instrument cluster. While less likely, failure of the PCM (Powertrain Control Module), BCM (Body Control Module), or fuel pump control module could also be contributing factors. For detailed troubleshooting steps, refer to official diagnostic resources: P0463 code explanation.