Engine Over Temperature
The engine temperature exceeds the normal operating range.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The engine's temperature sensor is detecting that the engine is running too hot, which can lead to serious damage if not addressed. Normally, the engine temperature should stay between 190-220°F (88-104°C).
What the computer is actually seeing
The engine control module (ECM) monitors the coolant temperature and triggers a fault when it exceeds 250°F (121°C) for a defined period, typically around 2 seconds.
What a healthy reading looks like
Expected coolant temperature should be between 190°F and 220°F (88°C - 104°C).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the coolant level in the reservoir. If it's low, refill and see if the code clears after proper operation.
- 22. Inspect the cooling system for leaks—look for puddles under the vehicle or signs of coolant residue.
- 33. Check the operation of the thermostat by monitoring the engine temperature during warm-up. It should open around 195°F (91°C). If it remains closed, replace it.
- 44. Inspect the radiator for obstruction. Ensure it's clean and air can flow freely.
- 55. Test the temperature sensor using a multimeter. At 200°F (93°C), it should output around 0.5 volts. If out of spec, replace the sensor.
Common causes
- Low coolant level
- Coolant leak
- Faulty thermostat
- Blocked radiator
- Faulty temperature sensor
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
No, driving with an overheating engine can cause severe damage.
Will this code come back after repairs?
If the root cause is fixed, the code should not return.
Why does this code appear alongside SPN 2213?
Both codes relate to engine temperature issues; one could be a symptom of the other.
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