P1642 Ford Code - Fuel Pump Monitor Circuit High Input
Quick Answer
The P1642 Ford code indicates a Fuel Pump Monitor Circuit High Input, which means that the powertrain control module (PCM) has detected a higher than normal voltage signal from the fuel pump monitor circuit. Common causes include Faulty fuel pump, Damaged wiring or connectors in the fuel pump circuit, Malfunctioning fuel pump relay. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1642 Ford indicates Fuel Pump Monitor Circuit High Input.
- Common causes
- Common causes include Faulty fuel pump, Damaged wiring or connectors in the fuel pump circuit, Malfunctioning fuel pump relay.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1642 Ford Description
The P1642 Ford code indicates a Fuel Pump Monitor Circuit High Input, which means that the powertrain control module (PCM) has detected a higher than normal voltage signal from the fuel pump monitor circuit. This circuit is responsible for monitoring the fuel pump's operation and ensuring it is functioning within the proper parameters. When the voltage signal is too high, it can indicate an issue with the fuel pump or its circuitry.
Common Causes of P1642 Ford
- Faulty fuel pump
- Damaged wiring or connectors in the fuel pump circuit
- Malfunctioning fuel pump relay
- Issues with the PCM
Symptoms of P1642 Ford
- Check engine light illuminated
- Decreased fuel efficiency
- Engine misfires or hesitation
- Stalling or difficulty starting the vehicle
How to Fix P1642 Ford
- Begin by performing a visual inspection of the fuel pump circuit, checking for any obvious signs of damage such as frayed wires or loose connectors.
- Use a multimeter to test the voltage signal at the fuel pump monitor circuit to determine if it is higher than normal.
- If the voltage signal is too high, test the fuel pump relay and replace it if necessary.
- Test the fuel pump itself to ensure it is functioning correctly. If the fuel pump is faulty, it will need to be replaced.
- Clear the diagnostic trouble codes (DTCs) and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1642 Ford
The typical repair costs for a Fuel Pump Monitor Circuit High Input issue can range from $200 to $500, depending on the specific cause of the problem and the cost of parts and labor. It's important to note that the actual cost may vary based on the location, vehicle make and model, and the rates charged by the auto repair shop. Diagnostic time and labor rates can also impact the final cost of the repair. It's recommended to consult with a trusted mechanic or shop for an accurate estimate.
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