P1E2D GMC Code - Auxiliary Transmission Fluid Pump Phase V Current Sensor Circuit Low Voltage
Quick Answer
The power inverter module, often referred to as 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
- P1E2D GMC indicates Auxiliary Transmission Fluid Pump Phase V Current Sensor Circuit 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 P1E2D GMC Description
Each motor control module operates its respective drive motor based upon hybrid powertrain control module commands. Each motor control module controls its respective motor through the sequencing actuation of high-current switching transistors called insulated gate bipolar transistors. Each motor operates utilising 3-phase alternating current AC electricity. Each insulated gate bipolar transistor operates a single phase of the drive motor generator. Each phase is individually identified as U, V and W. Each motor control module monitors the current of each phase in order to detect out of range current conditions.
Because each individual motor's phase circuits are electrically joined together, the phases normally flow about the same amount of current. The motor control module performs a mathematical calculation to verify that the phase current sensors are accurate. If the U-V-W phase current sensors indicate about the same amount of phase current, the sum of the calculation should be near zero. If the U-V-W phase currents are not similar, this DTC will set.
What are the Possible Causes of the DTC P1E2D 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 P1E2D 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 P1E2D 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 P1E2D GMC Code
1. What does the OBDII code P1E2D mean on a GMC vehicle?
P1E2D indicates a low voltage issue in the Auxiliary Transmission Fluid Pump Phase V Current Sensor Circuit, which is responsible for monitoring the auxiliary transmission fluid pump's electrical performance.
2. What are the common symptoms of the P1E2D code?
Common symptoms include transmission overheating, erratic shifting, reduced fuel efficiency, or the illumination of the check engine light.
3. What causes the P1E2D code to appear?
This code can be triggered by issues such as a faulty auxiliary transmission fluid pump, damaged wiring, a defective current sensor, or a problem with the vehicle's powertrain control module (PCM).
4. Can I drive my GMC vehicle with the P1E2D code active?
It is not recommended to drive the vehicle for extended periods, as the malfunctioning pump may lead to transmission overheating or further internal damage.
5. How do I diagnose the P1E2D code?
Start by inspecting the wiring and connectors for damage or corrosion, then test the auxiliary transmission fluid pump and current sensor for proper operation using a multimeter.
6. What tools are needed to troubleshoot the P1E2D code?
You’ll need an OBDII scanner, a multimeter, and possibly a repair manual specific to your GMC model to assist with electrical testing.
7. How is the P1E2D code fixed?
Repairs may include replacing the auxiliary transmission fluid pump, repairing or replacing damaged wiring, or replacing the current sensor if it is faulty.
8. Can a software issue cause the P1E2D code?
Yes, in some cases, a PCM software glitch or outdated firmware can trigger this code. Reprogramming or updating the PCM may resolve the issue.
9. How much does it cost to repair the P1E2D code?
Repair costs vary depending on the exact issue, but replacing the auxiliary transmission fluid pump can range from $300 to $800, including parts and labor.
10. Will clearing the P1E2D code with a scanner fix the problem?
Clearing the code will not fix the underlying issue. The problem must be properly diagnosed and repaired to prevent the code from reappearing.
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