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 computer in your car has noticed that the voltage for the electric pump that helps cool the engine is too high. It's like the pump is getting too much electricity.
The Engine Coolant Pump Control Module is responsible for regulating the voltage supplied to the electric coolant pump. If the voltage is higher than expected, it triggers this code.
The P26D1 code is set when the Engine Control Module (ECM) detects that the voltage in the engine coolant pump control module is higher than the specified range. This could indicate an issue with the control module, wiring, or the pump itself.
• Check Engine Light is on
• Engine overheating
• Reduced engine performance
• Unusual noise from the engine area
• Faulty engine coolant pump control module
• Wiring issues such as shorts or open circuits
• Defective coolant pump
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the voltage at the coolant pump control module.
• Check the functionality of the coolant pump.
• Repair or replace damaged wiring or connectors.
• Replace the engine coolant pump control module if faulty.
• Replace the coolant pump if it is defective.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $600
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks of the cooling system
• Ensure proper coolant levels
• Inspect wiring for damage regularly
Sensor Issue
• Do not ignore the Check Engine Light.
• Get the vehicle inspected by a professional if unsure.
• Avoid driving the vehicle if it shows signs of overheating.
Check with your vehicle manufacturer for warranty coverage on the cooling system components.
This code has been reported in vehicles with electric coolant pumps, particularly in models with advanced cooling systems.
High – Engine overheating can lead to severe engine damage.
Driving with an overheating engine can cause significant damage and may void warranty coverage.
• Engine at operating temperature
• Electrical system in normal condition
The engine coolant pump and its control module are typically located near the front of the engine, close to the radiator.
Q: Can I drive with a P26D1 code?
A: It's not recommended to drive with this code as it can lead to engine overheating and damage.
Q: How can I prevent this code from appearing?
A: Regular maintenance of the cooling system and checking for any wiring issues can help prevent this code.
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