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P0690 Ford Code - Electronic Control Module Power Relay Sense Circuit High

Quick Answer

The P0690 diagnostic trouble code (DTC) for Ford vehicles indicates a problem with the Electronic Control Module (ECM) power relay sense circuit being too high. Common causes include Faulty ECM power relay, Wiring or connection issues in the power relay sense circuit, Corrosion or damage to the ECM power 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
P0690 Ford indicates Electronic Control Module Power Relay Sense Circuit High.
Common causes
Common causes include Faulty ECM power relay, Wiring or connection issues in the power relay sense circuit, Corrosion or damage to the ECM power 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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0690 Ford Description

The P0690 diagnostic trouble code (DTC) for Ford vehicles indicates a problem with the Electronic Control Module (ECM) power relay sense circuit being too high. The ECM power relay is responsible for supplying power to the ECM, which is a crucial component that controls various systems in the vehicle, such as fuel injection, ignition timing, and emissions. When the sense circuit voltage is detected to be too high, it means that the ECM is not receiving the correct voltage signal, which can lead to malfunctions in the vehicle's systems.

OBDII Code P0690 Ford - Electronic Control Module Power Relay Sense Circuit High
P0690 Ford Code - Electronic Control Module Power Relay Sense Circuit High

Common Causes of P0690 Ford

  1. Faulty ECM power relay
  2. Wiring or connection issues in the power relay sense circuit
  3. Corrosion or damage to the ECM power relay
  4. ECM software or hardware issues
  5. Electrical system failures or malfunctions

Symptoms of P0690 Ford

  1. Check Engine Light illuminated
  2. Engine misfire or rough idle
  3. Reduced fuel efficiency
  4. Engine stalling
  5. Inability to start the vehicle

How to Fix P0690 Ford

  1. Perform a thorough inspection of the ECM power relay and sense circuit wiring for any damage or corrosion.
  2. Test the ECM power relay for proper functionality and replace if necessary.
  3. Check and repair any loose or damaged connections in the power relay sense circuit.
  4. Clear the DTC from the vehicle's memory using a diagnostic scanner.
  5. Test drive the vehicle to ensure the issue has been resolved and the code does not reappear.

Cost to Fix P0690 Ford

The cost to repair a P0690 code on a Ford vehicle can vary depending on the specific cause of the issue and the labor rates in your area. In general, the cost of parts for an ECM power relay replacement can range from $50 to $150, while the labor cost can be anywhere from $100 to $200. Overall, the total repair cost for this issue could be between $150 and $350. Keep in mind that prices may fluctuate based on the location, vehicle make and model, and the shop's hourly labor rates. It is recommended to obtain quotes from different repair facilities to find the best price for your specific situation.

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Information for Specific Ford Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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