Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer took too long to turn off the power relay, which is like a switch that controls the car's brain. It's like when you turn off a light, but the light stays on for a little too long.
The ECM/PCM power relay is responsible for supplying power to the vehicle's engine control module. This code indicates that the relay is not turning off when it should, leading to a delay in de-energizing.
The power relay for the ECM/PCM is supposed to de-energize (turn off) at a specific time. If it takes too long, it can cause issues with the vehicle's electrical system. This code is triggered when the ECM detects that the relay did not de-energize within the expected time frame.
• Check Engine Light is on
• Engine may not start
• Electrical components may not function properly
• Faulty ECM/PCM power relay
• Wiring issues or poor connections
• Defective ECM/PCM
ECM: Engine Control Module
PCM: Powertrain Control Module
Relay: An electrical switch that opens and closes under the control of another electrical circuit
• Check for other codes and address those first.
• Inspect the ECM/PCM power relay for proper operation.
• Examine wiring and connections for damage or corrosion.
• Replace the ECM/PCM power relay if found faulty.
• Repair or replace any damaged wiring or connectors.
• Replace the ECM/PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect electrical connections.
• Ensure the vehicle's battery is in good condition.
• Perform routine maintenance checks.
Electrical Issue
• Have the vehicle inspected by a professional.
• Avoid driving the vehicle until the issue is resolved.
Check if your vehicle's warranty covers electrical components.
This code has been more prevalent in vehicles with aging electrical systems.
Moderate – It should be addressed soon to avoid potential starting issues.
Driving with this code may lead to unexpected vehicle behavior. Address promptly.
• Vehicle in park or neutral
• Engine off
The ECM/PCM power relay is typically located in the vehicle's fuse box.
Q: Can I drive with a P068B code?
A: It's not recommended as it may lead to starting issues or other electrical problems.
Q: How do I reset the P068B code?
A: Fix the underlying issue, then use an OBD-II scanner to clear the code.
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