Jaguar Land Rover ECU EDC17CP55 | Most Common DTCs & Fixes Explained

Jaguar Land Rover EDC17CP55 DTC Solutions & ECU Repair Guide

The Jaguar Land Rover ECU EDC17CP55 is one of those systems that you either love or... well, let’s just say it keeps workshops busy. It’s used in a wide range of JLR vehicles and comes packed with sensors, controls, and plenty of opportunities for error codes.
If you’ve been working on models like the Jaguar XF, Land Rover Discovery, or Range Rover Evoque, chances are you’ve come across this ECU—and a few mystery DTCs that keep popping up.
Let’s walk through the most common DTCs we see on the bench at Electronic Repair, and how to handle them without chasing your tail.

​🔧 Common DTCs in EDC17CP55 (Jaguar/Land Rover)
✅ P0401 – EGR Flow Insufficient Detected
This one’s a classic. Usually tied to a clogged EGR valve or intake system.
Fix: EGR OFF file solution. Disables the EGR electronically with no check engine light or limp mode. Cleaner combustion, smoother drive.

✅ P2463 – DPF Soot Accumulation Too High
You’ll see this when the DPF is beyond the point of regeneration. The vehicle goes into limp mode, and your client is not happy.
Fix: DPF OFF file. Removes the DPF logic from the ECU, eliminating limp mode and DTC triggers. Ideal when physical DPF delete is already done.

✅ P20E8 – Reductant Pressure Too Low (AdBlue system)
AdBlue failures are common in JLR models, especially when the fluid freezes or crystallizes in the lines.
Fix: AdBlue OFF solution. Safely disables the SCR system and removes all related DTCs. No more warning lights or emergency stops.

✅ P0101 – MAF Sensor Performance Problem
This one can get tricky. It may not be the sensor itself—sometimes it's the ECU’s internal logic causing trouble.
Fix: DTC OFF service to disable the code if it’s persistent after hardware replacement, especially in tuned vehicles or intake-modified setups.

✅ U0401 – Invalid Data Received from ECM/PCM
This communication fault often appears after tuning or ECU cloning.
Fix: Re-check file integrity or use a corrected version. At Electronic Repair, we provide clean, checksum-corrected solutions for this ECU to eliminate such issues.

🛠️ Why File Services Are the Smart Fix
Trying to replace every part related to a DTC can get expensive—fast. That’s why smart workshops turn to file solutions that are already tested and proven to work.
Instead of spending hours diagnosing a sensor that’s already been replaced twice, you can:

• Flash a corrected file
• Clear the codes permanently
• Return the vehicle to the customer with zero warning lights

We keep things simple. You send the ECU read (OBD, bench, or boot), we send back the right solution—fast.

🚗 Supported Models (EDC17CP55)

• Jaguar XF / XE / XJ (2.0D, 3.0D)
• Land Rover Discovery Sport
• Range Rover Evoque
• Range Rover Velar
• And more...

This isn’t guesswork. We’ve been solving Jaguar and Land Rover ECU issues for years. The EDC17CP55 isn’t scary when you’ve got the right support.
Need help right now with a fault code?
📩 Send us the ECU read file and DTCs—we’ll take care of the rest.

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