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 noticed a problem with how the temperature of the radiator coolant and the engine coolant are matching up. It's like when two friends are supposed to meet at the same place but one of them is late.
The P00B6 code is triggered when the Engine Control Module (ECM) detects a discrepancy between the radiator coolant temperature and the engine coolant temperature.
The ECM monitors the temperature of the coolant in both the radiator and the engine using sensors. If the temperatures do not correlate as expected, it sets the P00B6 code. This could indicate an issue with the sensors, wiring, or the cooling system itself.
• Check Engine Light is on
• Engine overheating
• Poor fuel economy
• Engine performance issues
• Faulty coolant temperature sensors
• Wiring issues or poor connections
• Thermostat malfunction
• Radiator issues
• Cooling system blockage
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
Thermostat: A device that regulates the engine's temperature by controlling coolant flow
• Use an OBD-II scanner to confirm the code
• Check the coolant temperature sensors and wiring
• Inspect the thermostat for proper operation
• Examine the radiator and cooling system for blockages
• Replace faulty coolant temperature sensors
• Repair or replace damaged wiring
• Replace the thermostat if faulty
• Flush and clean the cooling system
• OBD-II scanner
• Multimeter
• Coolant system pressure tester
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check coolant levels
• Perform routine maintenance on the cooling system
• Inspect and replace sensors as needed
Sensor Issue
• Do not ignore the Check Engine Light
• Monitor engine temperature gauge
• Seek professional diagnosis if unsure
Check with your vehicle manufacturer for specific warranty coverage on engine and cooling system components.
This code has become more common with the increased use of electronic sensors in modern vehicles.
Moderate – Addressing this issue promptly can prevent engine overheating and further damage.
Driving with an overheating engine can cause severe damage and is unsafe. Address this issue as soon as possible.
• Engine at operating temperature
• Vehicle in a safe location
The coolant temperature sensors are typically located near the thermostat housing and on the radiator.
Q: Can I drive with a P00B6 code?
A: It's not recommended to drive with this code as it may lead to engine overheating.
Q: How do I reset the P00B6 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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Fitment Required · Vehicle-fitment part
Relevant when coolant-temperature and warm-up faults indicate a thermostat-related issue.
Coolant-temperature and warm-up faults often lead to thermostat testing and replacement.
Thermostats are vehicle-specific and should be matched by engine and housing style.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.