SENSOR VOLTAGE HIGH - INLET AIR TEMP
Indicates high voltage from the inlet air temperature sensor.
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 inlet air temperature sensor is sending a voltage signal that's higher than expected, usually over 4.5 volts when it should be below that.
What the computer is actually seeing
The computer monitors the inlet air temperature sensor output voltage, expecting a range of 0.5 to 4.5 volts depending on temperature. Values above 4.5 volts indicate a malfunction.
What a healthy reading looks like
0.5 to 4.5 volts under normal operating temperatures.
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.
- 1Inspect the wiring and connectors at the inlet air temperature sensor for damage or corrosion. Decision: If damaged, repair or replace.
- 2Check the inlet air temperature sensor signal voltage with a multimeter. You should see 0.5 to 4.5 volts. Decision: If above 4.5 volts, suspect sensor or wiring issues; if within range, suspect other systems.
- 3Test the inlet air temperature sensor by replacing with a known good sensor. Decision: If code clears and performance is good, replace the sensor.
Common causes
- Shorted wiring to the sensor
- Faulty inlet air temperature sensor
- Poor ground connection
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
You can drive it, but expect reduced performance or efficiency until fixed.
Will the code come back after I clear it?
If the issue isn't resolved, yes, it will likely return.
Why does it pair with other sensor codes?
It often pairs with other intake or temp sensor faults due to shared circuits or grounding issues.
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