P1E1C Chevrolet Code - Auxiliary Transmission Fluid Pump Control Module Hybrid Battery Voltage Isolation Sensor Circuit 1 Low Voltage
Quick Answer
The power inverter module, also called the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Common causes include Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter Module harness is open or shorted. 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
- P1E1C Chevrolet indicates Auxiliary Transmission Fluid Pump Control Module Hybrid Battery Voltage Isolation Sensor Circuit 1 Low Voltage.
- Common causes
- Common causes include Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter Module harness is open or shorted.
- 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 P1E1C Chevrolet Description
Each motor control module measures hybrid battery high voltage with several internal sensors. The motor control modules test for loss of isolation between either the high-voltage positive circuit or high-voltage negative circuit and vehicle chassis. The motor control modules test for isolation when the high-voltage contactor relays are closed. The hybrid powertrain control module 2 only tests the hybrid battery assembly for high-voltage loss of isolation when the high-voltage contactor relays are open.
Motor control module loss of isolation is detected through the use of two high-impedance resistors and voltage measuring circuitry. The two resistors are connected in series between the high- voltage positive and high-voltage negative circuits. The centre connection of the two resistors is also connected to vehicle chassis. The motor control module then measures the voltage drop across one of the resistors. Without a loss of isolation, the motor control module should measure about half of the high voltage potential. This is referred to as mid-pack voltage. The mid-pack voltage value is then doubled by the software and displayed on a scan tool as Motor 1 Isolation Voltage, Motor 2 Isolation Voltage or Auxiliary Transmission Fluid Pump Isolation Voltage. When a loss of isolation is present, the motor isolation voltage display will indicate voltage that is more or less than actual hybrid battery high voltage. The motor control module monitors the loss of isolation voltage measuring circuitry for correct operation.
What are the Possible Causes of the DTC P1E1C Chevrolet?
- Program Power Inverter Module
- Faulty Power Inverter Module
- Power Inverter Module harness is open or shorted
- Power Inverter Module circuit poor electrical connection
How to Fix the DTC P1E1C 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 P1E1C 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 P1E1C Chevrolet code?
Need more information on how to fix the P1E1C Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1E1C Chevrolet code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1E1C Chevrolet Code
1. What are the common symptoms of OBDII code P1E1C in a Chevrolet?
- Common symptoms of this code may include poor acceleration, reduced fuel efficiency, and the illumination of the check engine light on the dashboard.
2. What could cause the OBDII code P1E1C to trigger in a Chevrolet?
- The code P1E1C is often triggered by issues with the auxiliary transmission fluid pump control module or problems with the hybrid battery voltage isolation sensor circuit.
3. How serious is the OBDII code P1E1C in a Chevrolet?
- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential damage to the transmission system and ensure optimal vehicle performance.
4. Can I continue driving my Chevrolet with the OBDII code P1E1C present?
- It is recommended to avoid driving the vehicle for extended periods with the code active to prevent any further damage. It is best to have the issue diagnosed and repaired as soon as possible.
5. What are some repair tips for fixing the OBDII code P1E1C in a Chevrolet?
- Repairing this code may involve checking the auxiliary transmission fluid pump control module, inspecting the hybrid battery voltage isolation sensor circuit, and addressing any related wiring or connector issues.
6. Is it possible to reset the OBDII code P1E1C in a Chevrolet without making repairs?
- While clearing the code may temporarily turn off the check engine light, it is crucial to identify and address the underlying issue causing the code to prevent it from reoccurring.
7. Can a DIY enthusiast fix the OBDII code P1E1C issue in a Chevrolet?
- Depending on your experience and access to tools, some components related to this code may be accessible for DIY repair. However, complex electrical or transmission system issues may require professional diagnosis and repair.
8. How much does it typically cost to repair the OBDII code P1E1C in a Chevrolet?
- The cost of repairing this code can vary depending on the exact cause of the issue, the extent of the repairs needed, and whether you choose to address it yourself or seek professional assistance.
9. What happens if the OBDII code P1E1C in a Chevrolet is ignored?
- Ignoring this code could lead to potential transmission problems, reduced fuel efficiency, and further damage to the hybrid system components, ultimately impacting the overall performance and safety of the vehicle.
10. Is there a way to prevent the OBDII code P1E1C from appearing in my Chevrolet?
- Regular maintenance, such as checking transmission fluid levels and ensuring proper battery health, can help prevent issues that may trigger the P1E1C code. Promptly addressing any related warning signs can also help prevent this code from appearing.
Discuss the causes and fixes for P1E1C Chevrolet OBDII Code
Code P1E1C 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.
