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!

Body generic / SAE

P2514

Event Data Recorder Request Circuit High

The EDR request line reads stuck high — typically a short to battery voltage. The ECM cannot pulse the line back low to release the request, so the EDR may either ignore further requests or sit in a permanent triggered state.

SystemBody
Typegeneric / SAE
GroupP2
Range / number5 / 14

Possible causes

  • Request wire shorted to battery voltage high
  • Connector pins corroded - high contact resistance low
  • Supply wire pinched against B+ source low

Inspection / repair

  • Difficulty: medium
  • DIY: shop recommended
  • Estimated cost: 80–500 €
  • Estimated time: 0.5–2 h
  • Component: event data recorder
  • Component: request wire
  • MIL / check engine light

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