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 is getting a signal that the temperature sensor for the engine coolant is reading too low, like it's colder than it should be.
The Engine Control Module (ECM) monitors the engine coolant temperature sensor to ensure the engine is operating at the correct temperature. This code indicates that the sensor is reporting a temperature that is lower than expected.
The P1DEE code is triggered when the Engine Control Module (ECM) detects that the voltage signal from the engine coolant temperature sensor 2 is lower than the expected range. This could be due to a faulty sensor, wiring issues, or other related problems.
• Check Engine Light is on
• Poor fuel economy
• Engine overheating
• Faulty engine coolant temperature sensor
• Wiring issues such as short circuits or open circuits
• Faulty ECM
ECM: Engine Control Module, the computer that controls engine functions.
OBD-II: On-Board Diagnostics, a system for self-diagnosing and reporting vehicle issues.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the engine coolant temperature sensor with a multimeter.
• Replace the engine coolant temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect and maintain the cooling system.
• Ensure proper coolant levels are maintained.
• Check wiring and connectors for wear and tear.
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle until the issue is resolved to prevent engine damage.
Check with the vehicle manufacturer for warranty coverage on engine sensors.
This code has been reported in vehicles with aging sensors or wiring issues, particularly in models over 5 years old.
Moderate – Address promptly to avoid potential engine overheating.
Driving with this code may lead to engine overheating, which can be hazardous. Ensure repairs are made promptly.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The engine coolant temperature sensor is typically located near the thermostat housing or in the engine block.
Q: Can I drive with a P1DEE code?
A: It's not recommended to drive with this code as it may lead to engine overheating.
Q: How do I reset the P1DEE code?
A: The code can be reset with an OBD-II scanner after the issue is repaired.
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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.