Reduced Engine Performance fix - Mass Air Flow Sensor (MAF) on Land Rover LR3

If you have a Reduced Engine Performance error, good chances are this will fix it. Most Reduced Engine Performance errors on Land Rover are simply from dirty Mass Air Flow Sensors (MAF). Cleaning them is easy and they are simple to access. After MAF cleaning my LR3 was up and running strong with no errors.

[Asifyou]

I thank you and appreciate your help for uploading this video, it happened to my freelander 2 after pick up my daughter from school, so we parked at a gas station, got out and bought a mobile top up to use YouTube and to contact my husband. So I found this video and I rang my husband to bring the crc and the tool to unscrew the air flow, so I showed my husband the video and I just stood on the side and check he's doing exactly as you did and it works, so me and my daughter drove to pick up my baby from my mom's house. Thank you again.

[bfly]

Thank you for your video! My Land Rover works now. I also changed the air filter as well.. it was so black as night🤮…. Loved seeing your kids have fun. Stay warm out there.

[علموطاقةمعسمرا]

Hi iam frm lebanon thx for helping ur vedio made sense

[cber]

I read that another cause of low engine power fault is leaky or cracked hoses. So if cleaning the sensor doesn’t fix the problem, try changing or taping the hoses (if you can reach them 😂).

[billcoley]

Update on my wife’s car. I found several spark plugs kinda worn out so I changed them. While I was looking around I found a coil that looked like it had been hot. Kinda melted on the outside. So I changed that out too. It cranked up as usual.

[kevintoulytrades]

Thanks for Sharing. What issues did you experience when driving under a "Reduced Engine Performance" (REP) fault? How do you clear the fault message after the MAF was cleaned? Did you also replace the Engine Air Filter? Does the REP fault message go off on its own after you cleaned the MAF?
My RR Supercharged when going up a steep hill suddenly dropped in speed after accelerating above 80 mph almost completely lost accelerating power. It then displayed a REP message and check engine light came on (no smoke or over-heating, normal load). Seems like there's an interlock that kept me from accelerating even with my gas pedal floored under a REP fault. I pulled to the shoulder and turned off the engine waited a few minutes and engine performance was restored, but the check engine light is still on.

[victorsuarez]

Hey um I’m going to attempt this on mine but question how did u exactly clean it did u wait for it to dry or did u use something to dry it or is it fine to put back in after and the side did u spray that also or did u just wipe it off with a rag

[Asifyou]

did you spray the little bulb on top of the wire or did you just spray the wire without touching the bulb coz i know the pressure of spray can break the bulb thanks

[yattia]

I know this post is somewhat old, but I have been having the same issue as mentioned with the "Reduced Engine Performance" (REP) coming up on the dash, but without any CEL appearing. I took it to the garage and they told me it was the water pump for the supercharge that needed replacing which they did. But seems the issue is back again. I want to try cleaning the MAF sensor, but if I disconnect it myself and do the cleaning process, will I be faced with issues in terms of reprogramming the Computer/system on the car once I plug the MAF sensor back in place and start up the car? Or will it all be fine so long as the car is off and the I perform the cleaning process? Would appreciate your help.

[sadbravesfan]

Hi, what tool is that called that you used to remove the screws? Thanks

[bboneill]

Hi. Have reduced engine performance warning. No loss of power. Errors are C2620 and C044D. Anybody know what those errors relate to, please? Mechanic don't know.

[billcoley]

My wife’s Lr2 just broke down and the reduced light came on. We waiting on a tow truck to take it home. It will not crank at all.
I have to say that land rovers are terrible vehicles