P0687 Dodge Code - Engine Control Module Power Relay Control Circuit High
Quick Answer
The P0687 code for Dodge vehicles indicates a problem with the Engine Control Module (ECM) Power Relay Control Circuit being too high. Common causes include Faulty power relay, Damaged wiring or connectors in the control circuit, ECM malfunction. 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
- P0687 Dodge indicates Engine Control Module Power Relay Control Circuit High.
- Common causes
- Common causes include Faulty power relay, Damaged wiring or connectors in the control circuit, ECM malfunction.
- 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 P0687 Dodge Description
The P0687 code for Dodge vehicles indicates a problem with the Engine Control Module (ECM) Power Relay Control Circuit being too high. The ECM is a crucial component that controls various functions within the vehicle, such as fuel injection, ignition timing, and emissions control. The power relay control circuit is responsible for providing power to the ECM, ensuring it functions properly. When this circuit is detected to be operating at a high voltage, it can lead to issues with the ECM's performance, potentially causing the vehicle to run inefficiently or even stall.
Common Causes of P0687 Dodge
- Faulty power relay
- Damaged wiring or connectors in the control circuit
- ECM malfunction
- Electrical short circuits
- Corrosion in the electrical connections
Symptoms of P0687 Dodge
- Lack of power or acceleration
- Rough idling or stalling
- Reduced fuel efficiency
- Vehicle may not start
- Check Engine Light illuminated on the dashboard
How to Fix P0687 Dodge
- Diagnose the issue using a diagnostic scanner to retrieve the trouble codes and pinpoint the source of the high voltage in the power relay control circuit.
- Inspect the power relay, wiring, and connectors for any visible signs of damage or corrosion. Replace any components that appear faulty.
- Test the ECM to ensure it is functioning properly. If necessary, replace the ECM with a new unit.
- Clear the trouble codes from the vehicle's computer system and perform a test drive to verify that the issue has been resolved.
- If the problem persists, seek assistance from a professional mechanic for further diagnosis and repair.
Cost to Fix P0687 Dodge
The typical repair costs for addressing the P0687 code in a Dodge vehicle can range from $150 to $500, depending on the extent of the damage and the components that need to be replaced. This estimate includes the cost of parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check with local auto repair shops for a more accurate estimate.
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