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

P2472

Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3

The voltage from EGT sensor 3 on bank 1 is below the calibrated minimum. The signal indicates either a short to ground or a sensor returning impossibly low temperature.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 72

Possible causes

  • Signal shorted to ground high
  • Internal sensor short medium
  • Connector pins corroded - high contact resistance low

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 120–500 €
  • Estimated time: 0.5–2 h
  • Component: exhaust gas temperature sensor
  • Component: egt 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