P103E Code - Auxiliary Coolant Pump Control Signal Message Counter Incorrect
Quick Answer
The P103E diagnostic trouble code (DTC) indicates that the auxiliary coolant pump control signal message counter is incorrect. Common causes include Faulty auxiliary coolant pump, Wiring or electrical connection issues, Defective coolant temperature sensor. 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
- P103E indicates Auxiliary Coolant Pump Control Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty auxiliary coolant pump, Wiring or electrical connection issues, Defective coolant temperature sensor.
- 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 P103E Description
The P103E diagnostic trouble code (DTC) indicates that the auxiliary coolant pump control signal message counter is incorrect. This means that the vehicle's onboard computer has detected a discrepancy in the signal communication related to the auxiliary coolant pump. The auxiliary coolant pump is responsible for helping to regulate the engine's temperature by circulating coolant through the system when needed. When the control signal message counter is incorrect, it can lead to issues with the proper functioning of the auxiliary coolant pump, potentially causing overheating or inefficient cooling of the engine.
Common Causes of P103E
- Faulty auxiliary coolant pump
- Wiring or electrical connection issues
- Defective coolant temperature sensor
- Software or programming issues within the vehicle's computer system
- Corrosion or damage to components related to the auxiliary coolant pump
Symptoms of P103E
- Engine overheating
- Fluctuating temperature gauge readings
- Reduced heater performance
- Check engine light illuminated
- Decreased fuel efficiency
How to Fix P103E
- Begin by conducting a thorough inspection of the auxiliary coolant pump, wiring, and related components to identify any visible damage or defects.
- Test the auxiliary coolant pump and coolant temperature sensor using a multimeter to ensure they are functioning correctly.
- Check and repair any damaged wiring or connections that may be causing the incorrect control signal message counter.
- If necessary, reprogram the vehicle's computer system to correct any software issues related to the auxiliary coolant pump.
- Clear the DTC from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P103E
The typical repair costs for addressing a P103E code can vary depending on the specific cause of the issue. In general, the cost of replacing a faulty auxiliary coolant pump can range from $200 to $500, including parts and labor. Additional costs may be incurred if wiring repairs or software reprogramming are needed. It's recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of your vehicle.
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Code P103E Information for Specific Makes
- P103E Buick — Auxiliary Coolant Pump Control Signal Message Counter Incorrect
- P103E Cadillac — Auxiliary Coolant Pump Control Signal Message Counter Incorrect
- P103E Chevrolet — Auxiliary Coolant Pump Control Signal Message Counter Incorrect
- P103E Chrysler — Cylinder 4 Oil Supply Solenoid Valve Driver Open Circuit
- P103E Dodge — Cylinder 4 Oil Supply Solenoid Valve Driver Open Circuit
- P103E Fiat — Cylinder 4 Oil Supply Solenoid Valve Driver Open Circuit
- P103E GMC — Auxiliary Coolant Pump Control Signal Message Counter Incorrect
- P103E Jeep — Cylinder 4 Oil Supply Solenoid Valve Driver Open Circuit
Frequently Asked Questions about P103E Code
1. What are the common symptoms of OBDII code P103E?
The common symptoms of OBDII code P103E include engine overheating, coolant leaks, and the auxiliary coolant pump running continuously.
2. What can cause the OBDII code P103E to appear?
The OBDII code P103E may appear due to a faulty auxiliary coolant pump, a malfunctioning coolant temperature sensor, wiring issues, or a problem with the engine control module.
3. How serious is the OBDII code P103E?
The OBDII code P103E is considered a moderate severity issue. While it may not cause immediate engine failure, it can lead to overheating and potential damage if left unrepaired.
4. How can I diagnose the OBDII code P103E?
Diagnosing the OBDII code P103E involves using an OBDII scanner to retrieve the code, checking the auxiliary coolant pump and related components for any visible damage or defects, and testing the coolant temperature sensor.
5. What are some repair tips for fixing the OBDII code P103E?
Repair tips for fixing the OBDII code P103E include replacing the auxiliary coolant pump if it is faulty, checking and repairing any damaged wiring, ensuring proper coolant levels, and resetting the fault code after repairs are completed.
6. Can I drive my vehicle with the OBDII code P103E?
It is not recommended to drive your vehicle with the OBDII code P103E, as it can lead to engine overheating and potential damage. It is best to address the issue as soon as possible.
7. How much does it cost to repair the OBDII code P103E?
The cost of repairing the OBDII code P103E can vary depending on the underlying cause of the issue, the cost of parts, and labor rates. It is advisable to consult a mechanic for an accurate estimate.
8. Is the OBDII code P103E a common problem in specific vehicle makes and models?
The OBDII code P103E is more commonly reported in certain vehicle makes and models that are equipped with auxiliary coolant pumps. However, it can potentially occur in any vehicle with a similar cooling system setup.
9. Can a DIY enthusiast fix the OBDII code P103E at home?
While some aspects of diagnosing and repairing the OBDII code P103E can be done by DIY enthusiasts, it is recommended to seek professional help, especially when dealing with electrical components and coolant systems.
10. How can I prevent the OBDII code P103E from recurring in the future?
To prevent the OBDII code P103E from recurring, it is important to perform regular maintenance on the cooling system, address any leaks promptly, and ensure all components are functioning correctly.
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