P1E38 Code - Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit
Quick Answer
The P1E38 diagnostic trouble code (DTC) refers to the Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit. Common causes include Faulty wiring or connectors in the inverter supply voltage circuit, Blown fuses related to the auxiliary transmission fluid pump, Malfunctioning auxiliary transmission fluid pump inverter. 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
- P1E38 indicates Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit.
- Common causes
- Common causes include Faulty wiring or connectors in the inverter supply voltage circuit, Blown fuses related to the auxiliary transmission fluid pump, Malfunctioning auxiliary transmission fluid pump inverter.
- 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.
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Code P1E38 Description
The P1E38 diagnostic trouble code (DTC) refers to the Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit. This code indicates a problem with the voltage supply to the auxiliary transmission fluid pump inverter, which is a crucial component in the vehicle's transmission system. The auxiliary transmission fluid pump is responsible for maintaining proper fluid pressure and circulation within the transmission, ensuring smooth gear shifts and overall performance.
Common Causes of P1E38
- Faulty wiring or connectors in the inverter supply voltage circuit.
- Blown fuses related to the auxiliary transmission fluid pump.
- Malfunctioning auxiliary transmission fluid pump inverter.
- Corrosion or damage to the components in the circuit.
- Electrical issues within the transmission control module.
Symptoms of P1E38
- Erratic shifting or hesitation when changing gears.
- Transmission slipping or jerking during acceleration.
- Illumination of the check engine light on the dashboard.
- Transmission overheating or fluid leakage.
- Reduced fuel efficiency due to transmission inefficiencies.
How to Fix P1E38
- Diagnose the specific cause of the voltage supply issue using a scan tool to retrieve the DTC and perform electrical testing.
- Inspect the wiring, connectors, and fuses related to the inverter supply voltage circuit for any signs of damage or corrosion.
- Test the auxiliary transmission fluid pump inverter for proper function and replace if necessary.
- Clear the DTC from the vehicle's computer system after completing the repairs.
- Test drive the vehicle to ensure that the transmission is functioning correctly and that the issue has been resolved.
Cost to Fix P1E38
The typical repair costs for addressing the P1E38 code can vary depending on the extent of the issue and the specific components that require replacement. On average, the repair for this type of transmission-related problem can range from $200 to $600, including parts and labor. However, it's essential to note that diagnosis time and labor rates at auto repair shops can fluctuate based on various factors, so it's advisable to inquire locally for a more accurate estimate. Rates can range from $80 to $150 per hour, with differences based on location, vehicle make and model, and the type of engine.
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Code P1E38 Information for Specific Makes
- P1E38 Acura — Brake Pedal Feel Simulator Cut Valve Stuck ON Stuck Open
- P1E38 Buick — Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit
- P1E38 Cadillac — Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit
- P1E38 Chevrolet — Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit
- P1E38 GMC — Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit
- P1E38 Honda — Brake Pedal Feel Simulator Cut Valve Stuck ON Stuck Open
- P1E38 Saturn — Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit
Frequently Asked Questions about P1E38 Code
What does the OBDII code P1E38 mean?
Code P1E38 indicates an issue with the auxiliary transmission fluid pump inverter supply voltage circuit, which is responsible for managing the electric pump that circulates transmission fluid in certain hybrid or electric vehicles.
What are the common symptoms of code P1E38?
Symptoms may include an illuminated check engine light, reduced vehicle performance, overheating of the transmission, or unusual noises from the transmission area.
What causes code P1E38 to appear?
Common causes include a faulty auxiliary transmission fluid pump, a malfunctioning inverter circuit, damaged wiring or connectors, or a failure in the control module.
How do I diagnose code P1E38?
Diagnosis typically involves checking the wiring and connectors for damage or corrosion, testing the auxiliary transmission fluid pump for proper operation, and using a multimeter to measure voltage in the inverter circuit.
Can I drive with code P1E38 active?
Driving with this code is not recommended as it can lead to transmission overheating or failure, especially in hybrid or electric vehicles that rely on the pump for fluid circulation.
How can I fix code P1E38?
Repairs may include replacing the auxiliary transmission fluid pump, repairing or replacing damaged wiring, or replacing the inverter or control module if found to be faulty.
How much does it cost to repair code P1E38?
Repair costs can vary widely depending on the specific issue. Replacing an auxiliary transmission fluid pump may cost $200–$600, while inverter or module repairs can be significantly more expensive.
Can a low transmission fluid level cause code P1E38?
While low transmission fluid itself may not directly cause this code, it could contribute to overheating or other issues that exacerbate related problems.
What tools are needed to troubleshoot code P1E38?
You’ll typically need an OBDII scanner, a multimeter for voltage testing, and possibly wiring diagrams for the vehicle’s transmission system.
Is code P1E38 specific to certain vehicles?
Yes, this code is generally specific to hybrid or electric vehicles equipped with an auxiliary transmission fluid pump and inverter system.
Discuss the causes and fixes for P1E38 OBDII Code
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