Engine-CodesFord – P0689 Ford

P0689 Ford Code - Electronic Control Module Power Relay Sense Circuit Low

Quick Answer

The P0689 code for Ford vehicles indicates a problem with the Electronic Control Module (ECM) power relay sense circuit being detected as low. Common causes include Faulty ECM power relay, Loose or corroded electrical connections, Wiring harness issues. 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
P0689 Ford indicates Electronic Control Module Power Relay Sense Circuit Low.
Common causes
Common causes include Faulty ECM power relay, Loose or corroded electrical connections, Wiring harness issues.
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.
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P0689 Ford Description

The P0689 code for Ford vehicles indicates a problem with the Electronic Control Module (ECM) power relay sense circuit being detected as low. 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 power relay sense circuit is detected as low, it means that the ECM may not be receiving the necessary power, which can lead to malfunctions in the vehicle's systems.

OBDII Code P0689 Ford - Electronic Control Module Power Relay Sense Circuit Low
P0689 Ford Code - Electronic Control Module Power Relay Sense Circuit Low

Common Causes of P0689 Ford

  1. Faulty ECM power relay
  2. Loose or corroded electrical connections
  3. Wiring harness issues
  4. ECM power relay sensor malfunction
  5. ECM software issues

Symptoms of P0689 Ford

  1. Engine misfires or hesitation
  2. Check Engine Light illuminated
  3. Poor fuel economy
  4. Vehicle stalling or difficulty starting
  5. Reduced engine performance

How to Fix P0689 Ford

  1. Diagnose the issue by checking the power relay and related components
  2. Test the ECM power relay for proper functionality
  3. Repair or replace any damaged wiring or connectors
  4. Clear the diagnostic trouble codes and reset the ECM
  5. Test drive the vehicle to ensure that the issue has been resolved

Cost to Fix P0689 Ford

The cost of repairing the P0689 code for Ford vehicles can vary depending on the extent of the issue and the specific components that need to be repaired or replaced. On average, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total cost of repairing this issue can amount to approximately $150 to $500. It is important to note that these are rough estimates, and actual costs may vary based on location, vehicle make and model, and labor rates at auto repair shops.

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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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