P0113
Low severityIntake Air Temperature (IAT) Sensor High Input
Quick answer
P0113 (Intake Air Temperature (IAT) Sensor High Input) means: The intake-air temperature sensor is reading abnormally high (or open circuit). Low urgency; fix at next service. Typical Malaysia repair cost: RM80–RM300 (approximate).
Symptoms
- •Check engine light
- •Slightly rough running
Likely causes
- •Faulty IAT sensor
- •Wiring/connector fault
- •Sensor often built into the MAF
Can I drive?
Low urgency; fix at next service.
Estimated repair cost (Malaysia)
RM80–RM300 (approximate)
Diagnostic guide (for mechanics)
Work through these in order — cheapest and safest checks first, before replacing expensive parts.
1. Check the IAT sensor reading vs ambient
A high-reading (or open-circuit) intake-air temp sensor sets this. Compare cold-start reading to actual ambient.
Test: Live data IAT at cold start vs a thermometer.
Expected: IAT matches ambient within a few degrees.
2. Inspect connector and wiring
An open circuit reads as very high temperature. Check the connector for corrosion or a broken signal wire.
Test: Backprobe/continuity test the IAT signal and ground.
Expected: Continuity good; no corrosion.
Tools: OBD-II scan tool · Multimeter · Thermometer
When to escalate: Low urgency. Replace the IAT sensor if the reading stays implausible with good wiring.
This is general information, not a diagnosis. AutoMalaya OBD helps explain your car’s actual scan data; a qualified mechanic may still need to inspect the vehicle.