P0689 2012 Ford Fusion Code - Electronic Control Module Power Relay Sense Circuit Low
Quick Answer
The Powertrain Control Module (PCM) monitors the voltage on the Ignition Switch Position Run (ISP-R) and the Fuel Injector Power Monitor (INJPWRM) circuits. Common causes include Weak battery, Low voltage while cranking, Faulty Powertrain Control Module (PCM) 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
- P0689 2012 Ford Fusion indicates Electronic Control Module Power Relay Sense Circuit Low.
- Common causes
- Common causes include Weak battery, Low voltage while cranking, Faulty Powertrain Control Module (PCM) 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.
Code P0689 2012 Ford Fusion Description
What are the Possible Causes of the DTC P0689 2012 Ford Fusion?
- Weak battery
- Low voltage while cranking
- Faulty Powertrain Control Module (PCM) relay
- Blown PCM fuse
- Faulty PCM
- PCM harness is open or shorted
- PCM circuit poor electrical connection
How to Fix the DTC P0689 2012 Ford Fusion?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0689 2012 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0689 2012 Ford Fusion Code
What does the OBDII code P0689 mean for a 2012 Ford Fusion?
The code P0689 indicates a low voltage issue in the Electronic Control Module (ECM) power relay sense circuit.
What are the common symptoms of the P0689 code?
Symptoms include engine stalling, difficulty starting, poor performance, and possible illumination of the check engine light.
What causes the P0689 code to appear?
Common causes include a faulty ECM power relay, damaged wiring or connectors, or issues with the ECM itself.
Can a bad battery cause the P0689 code?
Yes, a weak or failing battery can lead to insufficient voltage in the ECM power relay circuit, triggering the code.
How is the P0689 code diagnosed?
A mechanic will inspect the ECM power relay, check for damaged wiring or connectors, and test the battery and alternator for proper voltage output.
Can I continue driving with the P0689 code active?
Driving with this code is not recommended, as it may lead to engine stalling or other performance issues that could create unsafe driving conditions.
How is the P0689 code fixed?
Repairs may include replacing the ECM power relay, repairing damaged wiring, or, in rare cases, replacing the ECM.
How much does it cost to fix the P0689 code?
Repair costs can vary, but replacing the ECM power relay typically costs $50-$150, while more extensive repairs like ECM replacement can exceed $500.
Could a blown fuse cause the P0689 code?
Yes, a blown fuse in the ECM power circuit can result in low voltage and trigger this code.
Is the P0689 code related to other system failures?
It can be linked to electrical or charging system issues, as the ECM relies on stable voltage to function properly.
Discuss the causes and fixes for P0689 2012 Ford Fusion OBDII Code
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