P138B Ford Code - Glow Plug Module System Voltage
Quick Answer
The P138B code for Ford vehicles refers to an issue with the Glow Plug Module System Voltage. Common causes include Faulty glow plug module, Corroded or damaged wiring connections, 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
- P138B Ford indicates Glow Plug Module System Voltage.
- Common causes
- Common causes include Faulty glow plug module, Corroded or damaged wiring connections, 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 P138B Ford Description
The P138B code for Ford vehicles refers to an issue with the Glow Plug Module System Voltage. This code indicates that there is a problem with the voltage levels in the glow plug module system, which is responsible for heating the glow plugs to assist with cold starting the diesel engine. The glow plug module provides power to the glow plugs for a specific amount of time to ensure proper starting in cold conditions. When this voltage is not within the specified range, it can lead to difficulties starting the engine, reduced fuel efficiency, and increased emissions.
Common Causes of P138B Ford
- Faulty glow plug module
- Corroded or damaged wiring connections
- Defective glow plugs
- Issues with the vehicle's battery or charging system
- Malfunctioning engine control module (ECM)
Symptoms of P138B Ford
- Hard starting or extended cranking time
- Engine misfires or rough idling
- Decreased fuel efficiency
- Illumination of the Check Engine Light
- Increased exhaust emissions
How to Fix P138B Ford
- Use a diagnostic scanner to retrieve the trouble codes and identify the specific issue with the glow plug module system voltage.
- Inspect the wiring connections for any corrosion or damage, and repair or replace as necessary.
- Test the glow plug module and glow plugs for proper functionality, replacing any faulty components.
- Check the vehicle's battery and charging system to ensure they are providing the correct voltage to the glow plug module.
- Clear the trouble codes, reset the ECM, and test the vehicle to verify that the issue has been resolved.
Cost to Fix P138B Ford
The cost of repairing a P138B Glow Plug Module System Voltage code can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair cost for this issue can range from $200 to $500. It's important to note that diagnostic time and labor rates at auto repair shops can affect the overall cost, so it's recommended to check with local shops for a more accurate estimate.
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Frequently Asked Questions about P138B Ford Code
1. What are the common symptoms of OBDII code P138B Ford related to the Glow Plug Module System Voltage?
The common symptoms include hard starting, rough idle, decreased fuel efficiency, and illuminated Check Engine Light.
2. What are the possible causes of OBDII code P138B Ford indicating issues with the Glow Plug Module System Voltage?
Possible causes may include a faulty glow plug module, damaged wiring or connectors, a weak battery, or issues with the vehicle's electrical system.
3. How can I diagnose the OBDII code P138B Ford related to the Glow Plug Module System Voltage?
Diagnosis typically involves checking the glow plug module and related components for proper functioning, inspecting wiring for any damage or loose connections, and testing the vehicle's battery and charging system.
4. Can I still drive my vehicle with OBDII code P138B Ford present?
It is not recommended to drive your vehicle with this code present, as it can lead to potential starting and performance issues. It is best to address the underlying problem as soon as possible.
5. How can I repair OBDII code P138B Ford associated with the Glow Plug Module System Voltage?
Repair may involve replacing the glow plug module, repairing or replacing damaged wiring or connectors, ensuring the battery is in good condition, and addressing any other electrical issues in the system.
6. Are there any precautions to take when working on the Glow Plug Module System related to OBDII code P138B Ford?
It is important to disconnect the vehicle's battery before working on any electrical components to prevent damage and ensure safety. Additionally, follow proper procedures outlined in the vehicle's service manual.
7. Can a DIY enthusiast fix OBDII code P138B Ford on their own?
Depending on their skill level and access to tools, a DIY enthusiast may be able to address this code by following proper diagnostic and repair procedures. However, seeking professional help is recommended for complex electrical issues.
8. What is the typical cost to repair OBDII code P138B Ford associated with the Glow Plug Module System Voltage?
The cost of repair can vary depending on the extent of the issue, parts needed, labor rates, and whether the repair is done at a dealership or an independent mechanic. It is advisable to obtain quotes from different sources.
9. Will resetting the OBDII system clear the P138B Ford code related to the Glow Plug Module System Voltage?
Resetting the OBDII system may temporarily clear the code, but it is likely to reappear if the underlying issue is not addressed. It is best to diagnose and repair the problem to prevent further issues.
10. How important is it to address OBDII code P138B Ford indicating problems with the Glow Plug Module System Voltage promptly?
It is crucial to address this code promptly to prevent potential starting issues, performance problems, and further damage to the vehicle's electrical system. Ignoring the code may lead to more significant and costly repairs in the future.
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