P1E1E GMC Code - Auxiliary Transmission Fluid Pump Control Module Hybrid Battery Voltage Isolation Sensor Circuit 2 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
- P1E1E GMC indicates Auxiliary Transmission Fluid Pump Control Module Hybrid Battery Voltage Isolation Sensor Circuit 2 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 P1E1E GMC 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 P1E1E GMC?
- 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 P1E1E GMC?
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 P1E1E GMC 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.
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Frequently Asked Questions about P1E1E GMC Code
1. What are common symptoms of OBDII code P1E1E in a GMC vehicle?
- Common symptoms include the check engine light coming on, reduced performance, and potential issues with shifting gears.
2. What does the OBDII code P1E1E GMC indicate?
- This code indicates a problem with the Auxiliary Transmission Fluid Pump Control Module Hybrid Battery Voltage Isolation Sensor Circuit 2, specifically low voltage.
3. What are possible causes of OBDII code P1E1E in a GMC?
- Possible causes include a faulty hybrid battery voltage isolation sensor, a malfunctioning transmission fluid pump control module, or issues with the wiring and connections in the circuit.
4. How can I diagnose the OBDII code P1E1E in my GMC?
- Diagnosis typically involves using an OBDII scanner to read the code, followed by testing the hybrid battery voltage isolation sensor, the transmission fluid pump control module, and checking the circuitry for any faults.
5. Can I still drive my GMC with the OBDII code P1E1E present?
- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potential safety concerns. It is best to address the issue promptly.
6. How can I repair OBDII code P1E1E in my GMC?
- Repairing this code may involve replacing the hybrid battery voltage isolation sensor, the transmission fluid pump control module, or repairing any damaged wiring or connections in the circuit.
7. Is it safe to reset the OBDII code P1E1E without fixing the underlying issue?
- It is not recommended to simply reset the code without addressing the underlying problem, as it will likely reappear and can cause ongoing issues with the vehicle.
8. Can a DIY enthusiast fix OBDII code P1E1E in a GMC?
- While some simple tasks like checking connections or sensor replacement may be within reach for a DIY enthusiast, diagnosing and repairing complex electrical issues may require professional expertise.
9. How much does it typically cost to repair OBDII code P1E1E in a GMC?
- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.
10. How can I prevent OBDII code P1E1E from recurring in my GMC?
- Regular maintenance, including checking the hybrid battery voltage isolation sensor, transmission fluid pump control module, and circuitry, can help prevent this code from recurring.
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