For Land Rover Jaguar vehicles, the diagnostic trouble code P167F-00 and P064F dtc typically indicates "Non-OEM Calibration Detected" (permanent fault).
Key Details:
- Cause: The engine control unit (ECU) has detected that the calibration software is not factory-original—often due to previous ECU tuning, aftermarket modifications, or incorrect reprogramming. Even if the vehicle is restored to stock settings, this code may persist as it is stored in the ECU’s memory.
- Potential Impacts: While it may not always affect driving performance, it could lead to failed emissions tests and may void certain warranty coverage if modifications are confirmed.
- Troubleshooting: Resolving the issue requires re-flashing the ECU with the correct Land Rover OEM calibration using specialized diagnostic tools (such as Land Rover’s SDD software). Professional ECU repair services can also clear the code and restore factory settings.
For Jaguar vehicles, the diagnostic trouble code P064F typically indicates "Unauthorized Software/Calibration Detected" (often specified as P064F-00).
Key Details:
- Core Meaning: The powertrain control module (PCM) or engine control unit (ECU) has identified software or calibration that is not factory-authorized, or a corruption in the original programming. This can also occur if a software update failed or was interrupted.
- Possible Causes:
- Aftermarket tuning, performance chips, or non-OEM software modifications.
- Corrupted or outdated factory software due to voltage spikes, moisture, or extreme temperatures.
- Failed PCM/ECU self-tests or internal module malfunctions.
- In rare cases, issues with the transfer case control module (TCCM) calibration (for all-wheel-drive models).
- Symptoms: Check engine light illumination, delayed/no engine start, rough idling, reduced performance, or the vehicle entering fail-safe mode.
- Repair Steps:
1. Use Jaguar-specific diagnostic tools (e.g., JLR SDD) to confirm the code and check for sub-codes that narrow down the issue.
2. Remove any aftermarket programming devices and reset the code to see if it reappears.
3. Reflash the ECU/PCM with the latest OEM calibration from Jaguar.
4. Replace the faulty control module if software repairs do not resolve the problem.
Have you recently had any software updates, modifications, or electrical issues with your Jaguar?
Have you recently had any tuning or modifications done on your Land Rover, or did the code appear unexpectedly? We can help
Call us today
