P0686 Pontiac Code - Engine Control Module Power Relay Control Circuit Low
Quick Answer
The powertrain relay is a normally open relay. Common causes include Weak battery, Low voltage while cranking, Faulty Engine Control Module (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
- P0686 Pontiac indicates Engine Control Module Power Relay Control Circuit Low.
- Common causes
- Common causes include Weak battery, Low voltage while cranking, Faulty Engine Control Module (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.
Code P0686 Pontiac Description
What are the Possible Causes of the DTC P0686 Pontiac?
- Weak battery
- Low voltage while cranking
- Faulty Engine Control Module (ECM) power relay
- ECM power relay harness is open or shorted
- ECM power relay circuit poor electrical connection
- Blown ECM fuse
- Faulty ECM
How to Fix the DTC P0686 Pontiac?
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 P0686 Pontiac 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 P0686 Pontiac Code
1. What are the common symptoms of OBDII code P0686 in a Pontiac?
- Common symptoms include engine stalling, difficulty starting the vehicle, poor engine performance, and illuminated Check Engine Light.
2. What causes the OBDII code P0686 in a Pontiac?
- The code is typically caused by a faulty engine control module power relay, a damaged power relay control circuit, or poor electrical connections.
3. How can I diagnose the OBDII code P0686 in my Pontiac?
- Diagnosing the code involves checking the engine control module power relay, inspecting the power relay control circuit for damage, and testing electrical connections for proper voltage and continuity.
4. Can a DIY enthusiast repair the OBDII code P0686 in a Pontiac?
- While some may attempt to repair the issue themselves, it is recommended to have a professional mechanic diagnose and repair the problem to ensure proper resolution.
5. Is it safe to continue driving with the OBDII code P0686 in a Pontiac?
- It is not advisable to continue driving with the code present, as it can lead to further damage to the engine control module and potentially leave you stranded on the road.
6. How much does it cost to repair the OBDII code P0686 in a Pontiac?
- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
7. Can the OBDII code P0686 in a Pontiac cause permanent damage to the vehicle?
- If left unresolved, the code can potentially cause permanent damage to the engine control module or other electrical components in the vehicle.
8. Are there any preventive measures to avoid the OBDII code P0686 in a Pontiac?
- Regular vehicle maintenance, including checking and replacing worn-out electrical components, can help prevent issues like the code P0686 from occurring.
9. How long does it take to repair the OBDII code P0686 in a Pontiac?
- The repair time can vary depending on the exact cause of the issue and the availability of parts, but it typically takes a few hours to complete the repair.
10. Can resetting the Check Engine Light clear the OBDII code P0686 in a Pontiac?
- Resetting the Check Engine Light may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.
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