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

P00E5

Intake Air Temperature/Fuel Temperature Correlation

Intake air and fuel temperature readings are inconsistent — at long soak both should match ambient. The intake air temperature sensor feeds the ECM's density calculation — a drifted reading miscalculates fuel mass and pushes mixture lean (cold reading) or rich (hot reading).

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / E5

Possible causes

  • One sensor drifted high

Inspection / repair

  • Difficulty: easy
  • DIY: possible

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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