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 running too hot because the temperature sensor is giving a high reading.
This code indicates that the engine coolant temperature sensor is reporting a temperature that is higher than expected.
The P1DED code is triggered when the engine control module (ECM) detects a signal from the engine coolant temperature sensor that is higher than the normal operating range. This could mean the sensor is faulty or the engine is genuinely overheating.
• Check Engine Light is on
• Engine overheating
• Poor fuel economy
• Faulty engine coolant temperature sensor
• Wiring issues such as shorts or open circuits
• Engine overheating due to low coolant or other issues
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code
• Inspect the engine coolant temperature sensor and wiring
• Check the coolant level and condition
• Replace the engine coolant temperature sensor
• Repair or replace damaged wiring
• Refill or flush the coolant system
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $300
Moderate
• Ford Focus
• Chevrolet Malibu
• Toyota Camry
• Regularly check coolant levels
• Inspect and replace sensors as needed
• Maintain the cooling system
Sensor Issue
• Do not drive the vehicle if it is overheating
• Regularly check the coolant level
Check with your vehicle manufacturer for warranty coverage on sensors.
This code has been commonly associated with faulty sensors or wiring issues in older vehicles.
High – Driving with an overheating engine can cause severe damage.
Ignoring this code can lead to engine damage and potential safety hazards.
• Engine at operating temperature
• Vehicle stationary
The engine coolant temperature sensor is typically located near the thermostat housing or on the engine block.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to engine overheating and serious damage.
Q: Can I drive with this code?
A: It's not recommended to drive with this code active, as it may indicate an overheating engine.
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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.