P1A8C Chevrolet Code - Volt Inverter Overtemperature
Quick Answer
The Accessory Power Module (APM) controls the energy flowing between the high voltage, 300-volt, direct current (DC) and intermediate voltage, 42-volt, DC to support the Electric Power Steering (EPS). Common causes include Restricted radiator air flow or coolant fans inoperative, Restricted power electronics coolant flow or contaminated coolant, Inoperative power electronics cooling system water pump. 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
- P1A8C Chevrolet indicates Volt Inverter Overtemperature.
- Common causes
- Common causes include Restricted radiator air flow or coolant fans inoperative, Restricted power electronics coolant flow or contaminated coolant, Inoperative power electronics cooling system water pump.
- 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 P1A8C Chevrolet Description
Heat is generated in the 42-volt APM circuit solely through the demand for use of the EPS. The Engine Control Module (ECM) measures the temperature of the Power Electronics Cooling Loop and commands the flow of 2 electrical coolant pumps. The APM transfers heat in the 42-volt circuit to the APM Heat Plate which is then dissipated at the Power Electronics Front End Heat Exchanger.
Based on the severity of an overheat condition in the 42-volt circuit, the APM will make decisions ranging from notification of an over temperature condition to the EPS to completely shutting down the 42-volt power conversion.
What are the Possible Causes of the DTC P1A8C Chevrolet?
- Restricted radiator air flow or coolant fans inoperative
- Restricted power electronics coolant flow or contaminated coolant
- Inoperative power electronics cooling system water pump
- Faulty Accessory Power Module (APM)
- Accessory Power Module (APM) harness is open or shorted
- Accessory Power Module (APM) circuit poor electrical connection
How to Fix the DTC P1A8C Chevrolet?
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 P1A8C Chevrolet 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.
Need more information about the P1A8C Chevrolet code?
Need more information on how to fix the P1A8C Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1A8C Chevrolet code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1A8C Chevrolet Code
1. What are the common symptoms of OBDII code P1A8C Chevrolet Volt Inverter Overtemperature?
The common symptoms include the Check Engine light illuminating, reduced power mode activation, and potential overheating issues.
2. What are the possible causes of the P1A8C code in a Chevrolet Volt?
The code P1A8C typically indicates an overtemperature condition in the inverter system, which can be caused by a malfunctioning coolant pump, a faulty temperature sensor, or inadequate cooling system performance.
3. How serious is the P1A8C fault code in a Chevrolet Volt?
The P1A8C code should be addressed promptly to prevent potential damage to the inverter system and ensure the vehicle's safety and performance.
4. Can I continue driving my Chevrolet Volt with the P1A8C code present?
It is not recommended to continue driving the vehicle with the P1A8C code active, as it can lead to further damage and potential safety hazards.
5. How can I diagnose and repair the P1A8C Chevrolet Volt Inverter Overtemperature code?
Diagnosis typically involves checking the inverter cooling system components, such as the coolant pump and temperature sensor, for any malfunctions. Repair may involve replacing faulty components, ensuring proper coolant levels, and testing the system for proper operation.
6. Can a DIY enthusiast address the P1A8C code in a Chevrolet Volt?
While basic troubleshooting steps like checking coolant levels can be done by DIY enthusiasts, diagnosing and repairing complex inverter system issues related to the P1A8C code may require professional expertise and specialized tools.
7. Is it necessary to reset the fault code after repairing the P1A8C issue in a Chevrolet Volt?
After repairing the underlying cause of the P1A8C code, it is recommended to clear the fault code using an OBDII scanner to reset the Check Engine light and ensure the issue has been resolved.
8. Will the P1A8C code return after clearing it in a Chevrolet Volt?
If the root cause of the P1A8C code has been successfully addressed, cleared, and the issue resolved, the code should not reappear. However, if the problem persists, further diagnosis may be required.
9. How long does it take to repair the P1A8C code in a Chevrolet Volt?
The repair time for the P1A8C code can vary depending on the underlying cause and complexity of the issue. It is advisable to consult a qualified mechanic for an accurate assessment.
10. Are there any preventive maintenance tips to avoid the P1A8C code in a Chevrolet Volt?
Regularly checking the cooling system components, ensuring proper coolant levels, and addressing any overheating issues promptly can help prevent the occurrence of the P1A8C code in a Chevrolet Volt.
Discuss the causes and fixes for P1A8C Chevrolet OBDII Code
Code P1A8C Chevrolet comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
