P0110low severityPowertrain
Intake Air Temperature (IAT) Sensor 1 Circuit
on 2003 Mazda B2300 2.3L I4 · FWD
What this code means
General malfunction in the intake air temperature sensor circuit.
Symptoms
- Check Engine Light
- Poor fuel economy
- Hard starting in cold weather
- Incorrect idle speed
Common causes
- Faulty IAT sensor
- Wiring issue
- Corroded connector
- Sensor contaminated
Diagnostic steps
- Test IAT sensor resistance at known temperature
- Inspect wiring and connector
- Compare IAT reading to ECT at cold start
Repair notes
Replace IAT sensor or repair wiring.
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P0014
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P0015
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