P1235 Mercury Code - Fuel Pump Control Out of Range
Quick Answer
The P1235 diagnostic trouble code (DTC) for Mercury vehicles indicates that the fuel pump control is out of range. Common causes include Faulty fuel pump control module, Wiring issues in the fuel pump control circuit, Bad 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
- P1235 Mercury indicates Fuel Pump Control Out of Range.
- Common causes
- Common causes include Faulty fuel pump control module, Wiring issues in the fuel pump control circuit, Bad 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 P1235 Mercury Description
The P1235 diagnostic trouble code (DTC) for Mercury vehicles indicates that the fuel pump control is out of range. This means that the powertrain control module (PCM) has detected a discrepancy between the expected fuel pump control signal and the actual signal received. The fuel pump control module plays a crucial role in regulating the fuel pump's operation, ensuring the right amount of fuel is delivered to the engine for optimal performance. When this control is out of range, it can lead to issues with fuel delivery, which can have a significant impact on the vehicle's overall performance.
Common Causes of P1235 Mercury
- Faulty fuel pump control module
- Wiring issues in the fuel pump control circuit
- Bad fuel pump relay
- PCM malfunction
Symptoms of P1235 Mercury
- Check engine light illuminated on the dashboard
- Engine misfires or hesitations
- Difficulty starting the vehicle
- Reduced fuel efficiency
- Engine stalling or failing to start
How to Fix P1235 Mercury
- Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific trouble codes and pinpoint the issue.
- Inspect the fuel pump control module, wiring, and relay for any signs of damage or corrosion.
- Test the fuel pump control module and relay using a multimeter to determine if they are functioning correctly.
- Replace any faulty components identified during the diagnostic process.
- Clear the trouble codes from the PCM and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1235 Mercury
The cost of repairing a P1235 code for a Mercury vehicle can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, replacing a faulty fuel pump control module or relay can cost between $200 to $500, including parts and labor. However, if the issue is more complex and involves wiring or PCM replacement, the cost can increase significantly. It is advisable to consult with a qualified mechanic or dealership for a more accurate estimate based on your vehicle's make and model. Please note that labor rates at auto repair shops can range from $80 to $150 per hour or more, so it's essential to consider this factor when estimating repair costs.
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