P1E2B Code - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High 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
- P1E2B indicates Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High 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 P1E2B 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 P1E2B?
- 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 P1E2B?
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 P1E2B 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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Information for Specific Makes
- P1E2B Buick — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage
- P1E2B Cadillac — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage
- P1E2B Chevrolet — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage
- P1E2B GMC — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage
- P1E2B Saturn — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage
Frequently Asked Questions about P1E2B Code
1. What are the common symptoms of OBDII code P1E2B?
- Common symptoms include the illumination of the Check Engine Light, transmission shifting issues, and decreased fuel efficiency.
2. What can cause the OBDII code P1E2B to appear?
- This code is typically triggered by a malfunction in the auxiliary transmission fluid pump phase U current sensor circuit, leading to high voltage readings.
3. How serious is the OBDII code P1E2B?
- 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.
4. How can I diagnose the issue related to code P1E2B?
- Diagnosing this code usually involves using a diagnostic scanner to retrieve the specific fault codes and then performing a thorough inspection of the auxiliary transmission fluid pump circuit.
5. Can I continue driving my vehicle with OBDII code P1E2B?
- It is not recommended to drive your vehicle for an extended period with this code present, as it can lead to further transmission issues if left unresolved.
6. How can I repair OBDII code P1E2B?
- Repairing this code typically involves inspecting the wiring and connections related to the auxiliary transmission fluid pump phase U current sensor circuit, and replacing any faulty components.
7. Is it safe to reset the OBDII code P1E2B and see if it comes back?
- While resetting the code may temporarily turn off the Check Engine Light, it is crucial to address the underlying issue causing the code to prevent further problems.
8. Can a DIYer fix the OBDII code P1E2B at home?
- Depending on your experience and tools, you may be able to address this code at home by checking and repairing the auxiliary transmission fluid pump circuit components.
9. Are there any preventative measures to avoid OBDII code P1E2B in the future?
- Regular maintenance of the transmission system, including fluid checks and replacements, can help prevent issues like the one triggering this code.
10. How long does it typically take to repair OBDII code P1E2B?
- The repair time can vary depending on the exact cause of the issue, but it may take anywhere from a few hours to a day to diagnose and repair the problem related to this code.
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