Broken or disconnected wire in the EDR request circuit.; Corroded or damaged connector terminals at the PCM or EDR module.; Faulty event data recorder module.; Open circuit inside the PCM affecting the request output.; Aftermarket electronic devices improperly wired into the circuit.; Rodent damage to wiring harness.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2512

P2512Event Data Recorder Request Circuit/ Open

Q: What does code P2512 mean?

Event Data Recorder Request Circuit/ Open. P2512 indicates that the event data recorder (EDR) request circuit has an open circuit, meaning the powertrain control module (PCM) cannot detect the expected voltage or continuity on the wire that triggers the EDR to record data during a crash event. The PCM sets this code when it commands the EDR and does not see the correct electrical response, typically because the circuit is broken or disconnected.

P2512 indicates that the event data recorder (EDR) request circuit has an open circuit, meaning the powertrain control module (PCM) cannot detect the expected voltage or continuity on the wire that triggers the EDR to record data during a crash event. The PCM sets this code when it commands the EDR and does not see the correct electrical response, typically because the circuit is broken or disconnected.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

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 is a passive system.
In rare cases, the EDR may fail to record data during a collision, which may be noticed only after an incident.
Some vehicles may display a message indicating a restraint system or data recording fault.
No noticeable change in engine performance or drivability.

Common causes, most likely first

Broken or disconnected wire in the EDR request circuit.
Corroded or damaged connector terminals at the PCM or EDR module.
Faulty event data recorder module.
Open circuit inside the PCM affecting the request output.
Aftermarket electronic devices improperly wired into the circuit.
Rodent damage to wiring harness.

How to diagnose and fix it

Inspect the EDR request circuit wiring for visible damage, corrosion, or disconnection.
Check and clean the connectors at both the PCM and EDR module.
Use a multimeter to test continuity of the request circuit from the PCM to the EDR.
Verify power and ground supplies to the EDR module.
If continuity is good, test the PCM output signal with an oscilloscope or scan tool bidirectional controls.
Replace the EDR module if it fails to respond to a known-good request signal.
Repair or replace the PCM if it cannot generate the correct request signal.

EDR Circuit Checks Before Module Replacement

A common misdiagnosis is replacing the EDR module when the actual fault is a chafed wire under the dash or seat where the harness rubs.
The EDR request circuit is often shared with the airbag system, so a related airbag code may also be present and should be diagnosed first.
Some vehicles require the EDR to be initialized or programmed after replacement, and a used module may not work without proper configuration.
Intermittent open circuits can be caused by loose pins that only lose contact during vibration, so wiggle-testing the harness while monitoring the circuit is essential.
The code can set if the battery was disconnected while the ignition was on, causing a momentary loss of communication that the PCM interprets as an open circuit.

Can I keep driving with P2512?

The vehicle is safe to drive under normal conditions because the EDR is a passive safety device that does not affect engine operation or braking. However, avoid any situation where crash data recording might be critical, and have the fault repaired promptly to ensure the EDR functions in an accident.

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.