Is your Jaguar F-Pace, Range Rover Evoque, or Land Rover Discovery Sport experiencing a loss of power ("Limp Mode") or drinking more diesel than usual? If your dashboard warns of "Restricted Performance" and you find code P0101-35, you are dealing with a Mass Air Flow (MAF) Sensor issue.
In this guide, we analyze a repair tutorial by SA Diagnostic's—who specifically uses the iCarsoft CR ULTRA P to complete the job. We'll show you why this tool is the professional's choice for JLR (Jaguar Land Rover) maintenance.
The MAF sensor is located on the air intake pipe, a critical component for engine efficiency.
Understanding P0101-35: The "Breathing" Problem
The MAF sensor tells the Engine Control Unit (ECU) exactly how much air is entering the engine. Code P0101-35 means the signal is "out of range."
- Symptoms: Hesitation on acceleration, black smoke, poor fuel economy, and transmission holding gears too long.
- Common Causes: Dirty sensor element, air leaks in the intake hoses, or a failed sensor.
Check out our related guide: How to fix common Land Rover Suspension Faults if you are also seeing air suspension warnings.
Video Tutorial: The Fix & The Tool
Watch the technician diagnose the fault and explicitly mention the tool he trusts:
Step-by-Step DIY Repair
1. Locate and Inspect
On the 2.0L Ingenium Diesel engine, the sensor is easily accessible on the air intake duct.
"It's a bit of a DIY job more than giving it to garages," says the technician.
2. Clean First, Replace Later
Before spending money on parts:
- Remove the sensor (usually held by Torx screws).
- Spray the internal wire gently with Electrical Contact Cleaner or MAF Cleaner.
- Let it dry and reinstall.
If the code returns, you must replace it. Important: Only use OEM sensors (like Denso or Bosch). Aftermarket sensors are notorious for causing "Range/Performance" codes on Land Rovers.
"I'm using the CR Ultra P... it's really easy to work on." — SA Diagnostic's
3. The Essential Step: Reset Adaptations
This is where the iCarsoft CR ULTRA P shines. The video explicitly states:
"You can reset the adaptions on this as well, I'm using the CR Ultra P the iCarsoft."
If you don't reset the "Air Flow Learned Values," the ECU will continue to apply corrections based on the old, dirty sensor. This leads to rough running even with a brand new part installed.
How to do it with CR ULTRA P:
- Select Land Rover or Jaguar > Powertrain.
- Go to Adaptation / Special Functions.
- Select "Reset Air Mass Flow Sensor Adaptations".
- Follow the on-screen instructions to complete the drive cycle.
Need more JLR maintenance tips? Read our Land Rover Service Light Reset Guide.
Why Experts Choose iCarsoft
JLR vehicles are complex. A generic code reader might see the P0101 code, but it cannot talk to the specific Land Rover modules to reset adaptations. The CR ULTRA P offers professional-level coverage for:
- DPF Regeneration: Critical for diesel models.
- EPB Release: For changing rear brake pads.
- Suspension Calibration: Essential for Range Rovers.
External Resource: Join the community discussion on Jaguar Forums.
Frequently Asked Questions (FAQ)
Is P0101-35 serious?
Yes. It affects the air-fuel mixture. Driving long-term can clog your Diesel Particulate Filter (DPF) due to excess soot, leading to much more expensive repairs.
Which vehicles does this guide cover?
This applies to most JLR vehicles with the 2.0L Ingenium Diesel engine, including:
- Jaguar F-Pace, XE, XF
- Land Rover Discovery Sport
- Range Rover Evoque, Velar
Does CR ULTRA P work on new 2024 models?
The CR ULTRA P has extensive coverage and receives free updates. Check our coverage list for the latest model year support.
Use the Tool the Pros Use.
The expert in the video uses the iCarsoft CR ULTRA P for a reason. Get yours today and fix your Land Rover correctly. Shop Now.
