Event Data Recorder Request Circuit High
The P2514 code indicates that the powertrain control module (PCM) has detected a high voltage condition in the event data recorder (EDR) request circuit. This circuit is used by external diagnostic tools to request data from the vehicle's EDR. A high voltage reading suggests a short to power, a faulty EDR module, or a wiring issue. This can prevent proper communication with the EDR and may affect accident data retrieval.
1. Most Common Causes
- Short circuit to battery voltage (B+) in the EDR request circuit wiring or connector
- Excessive resistance or open circuit in the EDR ground signal line
- Internal failure of the EDR module or its interface circuit
- Faulty voltage detection circuit in the main control module (PCM/ECM)
- Corrosion or damage to EDR-related harness connectors
- Electromagnetic interference or non-OEM modifications to the electrical system
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Inability to retrieve EDR data during diagnostics
- Possible no-start or drivability issues if related to PCM
3. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Visually inspect the EDR request circuit wiring and connectors for damage, shorts, or corrosion.
Step 3: Measure voltage at the EDR request circuit with key on; compare to manufacturer specifications.
Step 4: If voltage is high, isolate the circuit and test for shorts to power.
Step 5: If wiring is okay, test the EDR module and PCM per service manual procedures.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, the vehicle is generally safe to drive, but the EDR may not function properly, which could affect accident data recording. It's recommended to diagnose and repair promptly.
How much does it cost to fix?▼
Repair costs typically range from $100 to $300, depending on the cause. Wiring repairs are cheaper, while replacing the EDR module or PCM can be more expensive.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.