P0113: Ansauglufttemperatursensor 1 — Signal zu hoch
Ansauglufttemperatursensor 1 — Signal zu hoch: ECM detects an open circuit (>4.9 V) on the NTC thermistor IAT sensor line, interpreted as -40 °C (-40 °F).
| Trouble Code (DTC) | P0113 |
|---|---|
| Official SAE Definition | Ansauglufttemperatursensor 1 — Signal zu hoch |
| Vehicle Subsystem | powertrain |
| Driving Severity | LOW |
Observable Symptoms
- Hard cold start
- Delayed transmission overdrive lockup
- MIL illuminated
Most Probable Root Causes
- Unplugged MAF/IAT connector after air filter service
- Broken wire in MAF/IAT pigtail harness
- Open internal thermistor in IAT sensor
Step-by-Step Diagnostic Procedure
- Check live IAT reading on scan tool (if -40 °C, circuit is open)
- Ensure MAF/IAT harness plug is seated and latch locked