P1E31 Chevrolet Code - Auxiliary Transmission Fluid Pump Phase W 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
- P1E31 Chevrolet indicates Auxiliary Transmission Fluid Pump Phase W 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 P1E31 Chevrolet 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 P1E31 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 P1E31 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 P1E31 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.
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Frequently Asked Questions about P1E31 Chevrolet Code
1. What are the common symptoms of OBDII code P1E31 in a Chevrolet related to the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage issue?
Common symptoms include the illumination of the Check Engine Light, potentially harsh shifting of the transmission, reduced fuel efficiency, and in some cases, the transmission may go into a limp mode.
2. What are the possible causes of OBDII code P1E31 in a Chevrolet indicating an issue with the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage?
The potential causes could include a faulty auxiliary transmission fluid pump, a malfunctioning phase W current sensor, damaged wiring or connectors in the circuit, or a problem with the transmission control module.
3. How can I diagnose the OBDII code P1E31 in a Chevrolet related to the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage problem?
Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the auxiliary transmission fluid pump and phase W current sensor for any visible damage, and testing the circuit continuity and voltage.
4. What are some repair tips for addressing OBDII code P1E31 in a Chevrolet indicating a fault with the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage?
Repair tips may include checking and repairing any damaged wiring or connectors in the circuit, replacing a faulty auxiliary transmission fluid pump or phase W current sensor, and clearing the code to see if the issue recurs.
5. Is it safe to continue driving a Chevrolet with the OBDII code P1E31 related to the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage issue?
It's recommended to address the issue promptly to prevent potential damage to the transmission system. Continuing to drive with this fault unresolved may lead to further complications and potentially more costly repairs.
6. Can resetting the OBDII code P1E31 in a Chevrolet resolve the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage problem?
Resetting the code may temporarily clear the Check Engine Light, but if the underlying issue with the auxiliary transmission fluid pump or current sensor circuit is not addressed, the code is likely to reappear.
7. Are there any specific Chevrolet models known to be more prone to experiencing the OBDII code P1E31 related to the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage fault?
While this code can potentially occur in various Chevrolet models with auxiliary transmission fluid pumps, some models may have a higher incidence rate due to specific design characteristics or manufacturing issues.
8. What is the typical cost of repairing the OBDII code P1E31 in a Chevrolet indicating an issue with the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage?
The cost of repair can vary depending on the specific cause of the fault, the model of the Chevrolet, and labor rates. It's advisable to consult with a professional mechanic or dealership for an accurate estimate.
9. Can a DIY enthusiast with automotive knowledge address the OBDII code P1E31 in a Chevrolet related to the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage issue at home?
While some simple checks and repairs may be possible for DIY enthusiasts, diagnosing and fixing complex transmission-related issues like this code often require specialized tools and expertise. It's best to seek professional help if unsure.
10. How can regular maintenance help prevent the occurrence of the OBDII code P1E31 in a Chevrolet related to the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit High Voltage problem?
Regular maintenance, including transmission fluid checks and changes as recommended by the manufacturer, can help prevent issues with components like the auxiliary transmission fluid pump and current sensor, reducing the likelihood of this fault code.
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