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 a part of the car that helps control the engine's temperature. It's like a valve that opens and closes to let the engine cool down, but it's not working right now.
The P26AE code indicates that the engine control module (ECM) has detected a high voltage condition in the circuit that controls the engine coolant bypass valve B.
The engine coolant bypass valve B is responsible for controlling the flow of coolant in the engine to maintain optimal operating temperature. A 'Control Circuit High' condition suggests that the voltage in the control circuit is higher than expected, possibly due to a short circuit or a faulty valve.
• Check engine light is on
• Engine overheating
• Poor engine performance
• Faulty engine coolant bypass valve B
• Wiring issues such as open or short circuits
• Faulty ECM (Engine Control Module)
ECM: Engine Control Module, the computer that manages engine functions.
Coolant: A fluid used to remove excess heat from the engine.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the engine coolant bypass valve B for proper operation.
• Replace the engine coolant bypass valve B if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks
• Timely replacement of coolant
• Inspect wiring for wear and tear
Sensor Issue
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional if unsure.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been more prevalent in vehicles with advanced cooling systems that use multiple bypass valves.
Moderate – While the vehicle may still be operable, ignoring this issue could lead to engine overheating.
Driving with an unresolved engine issue can lead to further damage and may violate emissions regulations.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The engine coolant bypass valve B is typically located near the engine, connected to the cooling system hoses.
Q: Can I drive with a P26AE code?
A: It's not recommended to drive for long periods with this code, as it could lead to engine overheating.
Q: How can I reset the check engine light?
A: After fixing the issue, you can reset the light using an OBD-II scanner.
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