OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P0114

Intake Air Temperature Sensor Intermittent

The IAT signal shows intermittent dropouts or jumps that fall outside slope expectations but do not stay above or below threshold long enough to trigger P0112/P0113. Usually a wiring or connector issue.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / 14

Possible causes

  • Loose or oxidised connector high
  • Wiring chafed against engine medium
  • Connector with intermittent contact under vibration low

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 30–250 €
  • Estimated time: 0.3–2 h
  • Component: intake air temperature sensor
  • Component: intake air temperature sensor wiring
  • MIL / check engine light
  • emissions-relevant
  • drive cycle required

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication