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DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2514

P2514Event Data Recorder Request Circuit High

P2514 indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the event data recorder (EDR) request circuit, which is the communication line used to trigger the EDR to capture and store vehicle data during a crash event. The PCM expects a specific voltage range on this circuit and sets the code when the signal exceeds the upper threshold, indicating a short to voltage or an open circuit.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyProfessional
AreaVehicle speed, idle control and auxiliary inputs

Symptoms you may notice

  • Illumination of the malfunction indicator lamp (MIL) on the dashboard.
  • Often no symptoms besides the warning light, as the EDR system is passive and does not affect drivability.
  • In some vehicles, a message on the driver information center indicating a safety system fault.
  • The event data recorder may fail to record data during a collision, which is not noticeable during normal driving.
  • Possible stored trouble codes in other modules that communicate with the EDR, such as airbag or body control modules.
  • In rare cases, the engine may enter limp mode if the PCM interprets the fault as critical, but this is uncommon.

Common causes, most likely first

  1. A short to voltage on the EDR request circuit wiring, often due to chafed insulation or contact with a power wire.
  2. An open circuit in the EDR request circuit, such as a broken wire or disconnected connector.
  3. A faulty event data recorder module that internally shorts the request circuit to voltage.
  4. Corrosion or water intrusion in the connector at the EDR or PCM, causing high resistance or intermittent shorts.
  5. A malfunctioning PCM that incorrectly reads the voltage on the EDR request circuit.
  6. Aftermarket accessories improperly wired into the EDR circuit, causing voltage feedback.
  7. Damage to the wiring harness from rodents or physical impact.

How to diagnose and fix it

  1. Use a scan tool to verify P2514 is current and check for related codes in the EDR, airbag, and PCM systems.
  2. Obtain the factory wiring diagram for the EDR request circuit and identify all connectors and splice points.
  3. Visually inspect the EDR request circuit wiring for damage, chafing, or corrosion, especially near the EDR and PCM.
  4. Disconnect the EDR and PCM connectors and measure resistance and voltage on the request circuit to check for shorts to voltage or opens.
  5. If a short to voltage is found, trace the circuit and repair the damaged wire or connector; if an open is found, repair the break.
  6. If the wiring is intact, substitute a known-good EDR module and clear the code to see if it returns.
  7. If the code persists after replacing the EDR, diagnose the PCM for internal faults following the manufacturer's diagnostic flow chart.

EDR circuit faults are rarely the module

  • A high voltage on the EDR request circuit is more often caused by a short to power in the wiring harness than by a failed event data recorder module.
  • The EDR request circuit is a low-current signal line, so a short to voltage can be caused by something as simple as a pinched wire behind a trim panel or near a seat track.
  • Many technicians replace the EDR module prematurely; always check the circuit with a multimeter before condemning the module.
  • This code can be set by a weak or failing battery if voltage spikes occur during cranking, so check the charging system and battery health first.
  • On some vehicles, the EDR is integrated into the airbag control module, so a P2514 may be accompanied by airbag codes and should be diagnosed with that in mind.

Can I keep driving with P2514?

The vehicle is generally safe to drive because the EDR system does not affect engine performance or safety systems during normal operation, but the EDR may not record data in a crash. Avoid any driving that could risk a collision until the fault is repaired, and have the circuit inspected promptly to ensure the EDR functions when needed.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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