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 is getting strange readings from the sensor that tells it how hot or cold the engine is. It's like a thermometer for your car, and it's not working right.
The P0116 code is triggered when the Engine Control Module (ECM) detects a problem with the engine coolant temperature sensor's readings. The sensor's output is not within the expected range.
The Engine Coolant Temperature (ECT) sensor measures the temperature of the engine's coolant. The ECM uses this information to help control the fuel injection system, ignition timing, and other important engine functions. If the sensor's output is not within the expected range, the ECM sets the P0116 code.
• Check Engine Light is on
• Poor fuel economy
• Engine overheating
• Hard starting or stalling
• Faulty engine coolant temperature sensor
• Wiring issues such as shorts or open circuits
• Poor electrical connection at the sensor
• Faulty ECM
ECM: Engine Control Module
ECT: Engine Coolant Temperature
• Use an OBD-II scanner to verify the code.
• Inspect the ECT sensor and its wiring for damage.
• Check the coolant level and condition.
• Test the ECT sensor with a multimeter.
• Replace the engine coolant temperature sensor.
• Repair or replace damaged wiring or connectors.
• Ensure proper coolant level and condition.
• Replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$50 - $200
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly check and maintain coolant levels.
• Inspect wiring and connectors for damage.
• Replace the ECT sensor at recommended intervals.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent sensor issues.
Check with the vehicle manufacturer for warranty coverage on sensors.
P0116 is a common code that has been reported in various vehicles, often due to sensor failure or wiring issues.
Moderate – Address the issue soon to prevent potential engine damage.
Ignoring the Check Engine Light can lead to more severe engine problems and may affect vehicle emissions compliance.
• Engine at operating temperature
• Stable coolant levels
The ECT sensor is typically located near the thermostat housing or in the cylinder head.
Q: Can I drive with a P0116 code?
A: It's not recommended to drive for extended periods with this code, as it may lead to engine performance issues.
Q: How do I reset the Check Engine Light after fixing the issue?
A: You can use an OBD-II scanner to clear the code, or the light may turn off after several driving cycles if the issue is resolved.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
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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.