P138A Ford Code - Glow Plug Control Module Control Circuit Range/Performance
Quick Answer
The P138A Ford diagnostic trouble code (DTC) refers to the Glow Plug Control Module Control Circuit Range/Performance. Common causes include Faulty glow plug control module, Wiring or connection issues in the control circuit, Defective glow plugs. 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
- P138A Ford indicates Glow Plug Control Module Control Circuit Range/Performance.
- Common causes
- Common causes include Faulty glow plug control module, Wiring or connection issues in the control circuit, Defective glow plugs.
- 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.
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Code P138A Ford Description
The P138A Ford diagnostic trouble code (DTC) refers to the Glow Plug Control Module Control Circuit Range/Performance. This code indicates that there is an issue with the control circuit of the glow plug control module in the vehicle. The glow plug control module is responsible for controlling the operation of the glow plugs, which are used to preheat the combustion chamber in diesel engines for easier starting in cold conditions. When this control circuit is not functioning properly, it can lead to various performance issues in the vehicle.
Common Causes of P138A Ford
- Faulty glow plug control module
- Wiring or connection issues in the control circuit
- Defective glow plugs
- ECM communication problems
- Corrosion or damage to electrical components
Symptoms of P138A Ford
- Difficult starting, especially in cold weather
- Rough idling or misfiring
- Decreased fuel efficiency
- Illumination of the check engine light
- Increased emissions
How to Fix P138A Ford
- Begin by using a diagnostic scan tool to verify the P138A code and identify the specific issue with the glow plug control module.
- Inspect the wiring and connections in the control circuit for any damage, corrosion, or loose connections. Repair or replace any faulty wiring or connectors.
- Test the glow plugs for proper operation and replace any defective glow plugs as needed.
- Check the glow plug control module for functionality and replace it if it is found to be faulty.
- Clear the DTC and test drive the vehicle to ensure that the issue has been resolved and that the glow plugs are operating correctly.
Cost to Fix P138A Ford
The typical repair costs for addressing the P138A Ford code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the cost of replacing a glow plug control module can range from $200 to $500, including parts and labor. However, additional costs may apply if there are other components that need to be replaced or if extensive diagnostics are required. It is recommended to consult with a professional mechanic to get an accurate estimate based on the vehicle's make and model, as well as the local labor rates.
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Frequently Asked Questions about P138A Ford Code
1. What are common symptoms of OBDII code P138A in a Ford related to the Glow Plug Control Module Control Circuit?
- Common symptoms include rough idling, difficulty starting the engine, reduced fuel efficiency, and the check engine light turning on.
2. What are the possible causes of OBDII code P138A in a Ford related to the Glow Plug Control Module Control Circuit?
- Possible causes include a faulty glow plug control module, damaged wiring or connectors, a defective glow plug relay, or issues with the glow plugs themselves.
3. How can I diagnose OBDII code P138A in a Ford related to the Glow Plug Control Module Control Circuit?
- Diagnosis involves using an OBDII scanner to retrieve the trouble code, checking the glow plug control module, inspecting wiring for damage, and testing the glow plugs and relay.
4. Can I continue driving my Ford with OBDII code P138A related to the Glow Plug Control Module Control Circuit?
- It is not recommended to drive your vehicle with this code as it can lead to poor engine performance and potential further damage if left unresolved.
5. How can I repair OBDII code P138A in a Ford related to the Glow Plug Control Module Control Circuit?
- Repair involves replacing the glow plug control module if faulty, repairing or replacing damaged wiring, testing and replacing the glow plug relay if necessary, and ensuring proper functioning of the glow plugs.
6. Are there any maintenance tips to prevent OBDII code P138A related to the Glow Plug Control Module Control Circuit in a Ford?
- Regularly inspect and maintain the glow plug system, follow the manufacturer's recommended service intervals, and address any engine performance issues promptly to prevent this code from occurring.
7. Can weather conditions affect OBDII code P138A in a Ford related to the Glow Plug Control Module Control Circuit?
- Extreme cold weather can put more strain on the glow plug system, potentially leading to issues related to this code. Ensuring your vehicle is properly maintained can help prevent weather-related problems.
8. How long does it typically take to repair OBDII code P138A related to the Glow Plug Control Module Control Circuit in a Ford?
- The repair time can vary depending on the exact cause of the issue, but it may take anywhere from a couple of hours to a full day to diagnose and repair the problem effectively.
9. Can I reset the check engine light after resolving OBDII code P138A in a Ford related to the Glow Plug Control Module Control Circuit?
- Yes, once the underlying issue is fixed, the check engine light can be reset using an OBDII scanner to clear the trouble code from the vehicle's system.
10. Is it necessary to take my Ford to a mechanic for OBDII code P138A related to the Glow Plug Control Module Control Circuit, or can I fix it myself?
- Depending on your experience and access to tools, you may be able to diagnose and repair this issue yourself. However, if you're unsure or if the problem persists, it's recommended to seek professional assistance.
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