Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected that the electric pump, which helps move the transmission fluid, is not using enough electricity. It's like when a toy's battery is running low, and it doesn't work properly.
The P276E code is triggered when the transmission control module (TCM) detects a low current draw from the auxiliary transmission fluid pump B motor. This can indicate a problem with the pump motor or its electrical circuit.
The auxiliary transmission fluid pump B is responsible for maintaining fluid pressure within the transmission system, especially when the engine is off or at low RPMs. A low current reading can suggest issues such as a failing pump motor, poor electrical connections, or a fault in the control circuitry.
• Transmission overheating
• Poor transmission performance
• Illuminated check engine light
• Faulty auxiliary transmission fluid pump B motor
• Poor electrical connections or wiring issues
• Faulty transmission control module (TCM)
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Verify the code with an OBD-II scanner.
• Inspect the wiring and connections to the pump motor.
• Test the pump motor for proper operation and current draw.
• Repair or replace faulty wiring or connectors.
• Replace the auxiliary transmission fluid pump B motor.
• Reprogram or replace the transmission control module (if necessary).
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Toyota Prius
• Ford Fusion Hybrid
• Chevrolet Volt
• Regular maintenance of the transmission system.
• Ensure proper fluid levels and quality.
• Check electrical connections periodically.
Sensor Issue
• Do not ignore the check engine light.
• Seek professional diagnosis if unsure.
• Avoid driving extensively until the issue is resolved.
Check with your vehicle manufacturer for specific warranty coverage on transmission components.
This code has become more common with the increased use of electric and hybrid vehicles, which rely on electric pumps for transmission fluid circulation.
Moderate – While not immediately critical, it should be addressed to prevent potential transmission damage.
Driving with a malfunctioning transmission pump can lead to overheating and potential transmission failure, which may cause safety issues.
• Vehicle at operating temperature
• Engine running at idle
The auxiliary transmission fluid pump B is typically located near the transmission, often mounted externally for easy access.
Q: Can I drive with a P276E code?
A: It's not recommended to drive extensively with this code, as it can lead to transmission overheating.
Q: How do I clear a P276E code?
A: After repairs, use an OBD-II scanner to clear the code. However, ensure the issue is fixed to prevent recurrence.
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