Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part of the car that helps move the transmission fluid. It's like a switch that isn't working right, so the fluid can't move as it should.
The P27E3 code indicates an issue with the electrical circuit that controls the auxiliary transmission fluid pump. This pump helps circulate transmission fluid when the main engine-driven pump isn't sufficient.
The P27E3 code is triggered when the Powertrain Control Module (PCM) detects an open or malfunction in the circuit controlling the electric or auxiliary transmission fluid pump control valve. This could mean that the circuit is not completing properly, leading to inadequate fluid pressure and potential transmission performance issues.
• Transmission overheating
• Poor transmission performance
• Illuminated check engine light
• Faulty transmission fluid pump control valve
• Open or shorted wiring in the control circuit
• Faulty PCM or transmission control module
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Inspect the transmission fluid pump control valve and related wiring for damage.
• Use a multimeter to check for continuity in the circuit.
• Test the PCM for proper operation and signals.
• Replace the faulty transmission fluid pump control valve.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain transmission fluid levels.
• Inspect wiring and connectors for signs of wear or damage.
• Schedule routine transmission maintenance.
Electrical Circuit Issue
• Do not ignore the check engine light.
• Have a professional diagnose the issue promptly.
• Avoid heavy towing or load until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on transmission components.
The P27E3 code has been associated with vehicles using electric auxiliary pumps to improve transmission efficiency, especially in modern vehicles with start-stop systems.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Operating a vehicle with a faulty transmission system can lead to safety hazards. Ensure repairs are done by qualified professionals.
• Vehicle at operating temperature
• Transmission in various gears
The auxiliary transmission fluid pump is typically located near the transmission or integrated within the transmission assembly.
Q: Can I drive with a P27E3 code?
A: It's not recommended to drive with this code as it can lead to transmission damage.
Q: How do I clear a P27E3 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
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