Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer thinks the engine is too cold, even when it's not. It's like when a thermometer is broken and always shows the same low temperature.
The engine control module (ECM) is receiving a signal from the engine coolant temperature (ECT) sensor that indicates the temperature is lower than expected.
The P316B code is triggered when the ECM detects that the signal from the ECT sensor is stuck at a low value. This could be due to a faulty sensor, wiring issues, or a problem with the ECM itself. The ECT sensor is responsible for measuring the temperature of the engine's coolant, which helps the ECM manage engine performance and emissions.
• Check Engine Light is on
• Poor fuel economy
• Engine runs poorly or stalls
• Faulty engine coolant temperature sensor
• Wiring issues or poor connection in the ECT sensor circuit
• Faulty ECM
ECM: Engine Control Module, the computer that controls engine functions.
ECT Sensor: Engine Coolant Temperature Sensor, which measures the temperature of the engine's coolant.
• Use an OBD-II scanner to confirm the code
• Inspect the ECT sensor and its wiring for damage
• Test the ECT sensor for proper operation
• Replace the faulty ECT sensor
• Repair or replace damaged wiring or connectors
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain the cooling system
• Ensure all electrical connections are secure
• Replace sensors at recommended intervals
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent engine damage.
• Consult a professional mechanic for a thorough diagnosis.
Check your vehicle's warranty for coverage on emissions-related components.
This code has been associated with sensor failures and wiring issues in various vehicle models.
Moderate – Address promptly to avoid potential engine performance issues.
Ignoring this code may lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle parked on a level surface
The ECT sensor is typically located near the thermostat housing on the engine.
Q: What happens if I ignore the P316B code?
A: Ignoring this code can lead to poor engine performance, reduced fuel efficiency, and potential engine damage.
Q: Can I drive my car with a P316B code?
A: It's not recommended to drive with this code active, as it can lead to further engine issues.
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
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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.