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 detected that the electric pump that helps move the transmission fluid is using too much power. It's like when a toy uses too much battery power and stops working right.
The P276F code indicates that the electric or auxiliary transmission fluid pump 'B' is drawing more current than expected, which could signify a problem with the pump or its electrical circuit.
The transmission fluid pump is responsible for circulating transmission fluid through the transmission to ensure proper lubrication and cooling. An auxiliary pump is often used in hybrid or electric vehicles to maintain fluid flow when the engine is off. The 'B' designation refers to a specific pump or circuit. Excessive current draw can indicate a mechanical issue with the pump, a short circuit, or increased resistance in the circuit.
• Check Engine Light is on
• Transmission overheating
• Reduced fuel efficiency
• Unusual noises from the transmission
• Faulty transmission fluid pump B
• Short circuit in the wiring or connector
• Increased resistance in the pump circuit
• Faulty control module
Transmission: A system in a vehicle that transmits power from the engine to the wheels.
Current: The flow of electric charge, measured in amperes.
• Use an OBD-II scanner to confirm the P276F code.
• Inspect the wiring and connectors for damage or corrosion.
• Measure the current draw of the pump to verify excessive current.
• Test the pump for mechanical failure.
• Repair or replace damaged wiring or connectors.
• Replace the faulty transmission fluid pump B.
• Replace or reprogram the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$300 - $800
Moderate
• Toyota Prius
• Ford Fusion Hybrid
• Chevrolet Volt
• Regular maintenance of the transmission system
• Check and replace transmission fluid as recommended
• Inspect wiring and connectors periodically
Electrical Circuit Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult with a professional mechanic for a thorough diagnosis.
Check with the vehicle manufacturer for warranty coverage on transmission components.
This code has become more common with the rise of hybrid and electric vehicles that utilize electric pumps for transmission fluid circulation.
Moderate – Addressing this issue promptly can prevent further damage to the transmission.
Driving with a faulty transmission pump can lead to transmission failure, which may cause safety issues.
• Vehicle must be running and in 'Drive' mode.
• Transmission fluid temperature should be within normal operating range.
The electric/auxiliary transmission fluid pump is typically located near the transmission assembly, often accessible from underneath the vehicle.
Q: Can I drive with a P276F code?
A: It's not recommended to drive with this code, as it can cause further damage to the transmission.
Q: How do I reset the P276F code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is resolved, the code should not return.
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