OBD-II code P2512 indicates an open circuit in the Event Data Recorder (EDR) request line, which is used by the vehicle's safety systems to trigger data recording during a crash or significant event. This fault suggests the wiring or connection to the EDR module is interrupted or damaged.
The most common cause is physical damage to the wiring harness, such as chafing, cuts, or corrosion, leading to an open circuit in the EDR request line.
Poor electrical connections due to loose pins, dirt, or corrosion at the EDR module or PCM connector can interrupt the circuit.
While less common, the EDR module itself may fail internally, causing an open circuit in the request line.
A blown fuse or defective relay in the EDR request circuit can create an open condition, though this is less likely unless other systems are also affected.
An internal failure in the Powertrain Control Module (PCM) or Engine Control Module (ECM) affecting the EDR request circuit is possible but extremely uncommon. This should only be considered after all other causes are ruled out.
P2512 itself does not typically affect drivability, but it may indicate a problem with the vehicle’s ability to record event data during a crash. Related safety systems (e.g., airbags) may still function, but their data may not be logged correctly.
No, the PCM is rarely the cause of P2512. This code is almost always due to wiring issues, connector problems, or a faulty EDR module. Replacing the PCM should only be considered as a last resort after thorough testing.
While the vehicle may remain drivable, it is recommended to address the issue promptly, as the EDR may not function correctly during an accident, potentially affecting insurance or legal matters.
A faulty EDR module is typically diagnosed by ruling out wiring and connector issues first. If the circuit tests as open despite intact wiring, the module may need replacement or further testing with specialized equipment.