Simple MAP Sensor Testing - How To DIY

In this video I go through the step by step process of diagnosing and fixing an engine management light warning fault on in a Ford Ranger 3.0 Diesel.
The fault was related to the (MAP) Manifold Absolute Pressure Sensor AKA boost pressure sensor, I detail the signs of a faulty sensor & how to test it with a multimeter and vacuum gauge on a 2.0 Ford Focus duratec engine




Disclaimer:
GerardBurke is a qualified motor technician who has completed modules & courses in manual handling and all aspects of workshop safety. These videos are not intended to be used by anyone who is not trained and or qualified to carry them out.
Due to factors beyond the control of GerardBurke, I cannot guarantee against improper use or unauthorized modifications of this information. GerardBurke assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. GerardBurke recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of GerardBurke, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not GerardBurke.

How to replace a boost pressure sensor / Map sensor on a Ford Ranger / Mazda BT50
How to test and change the map sensor on a Ford Focus

Related fault codes P0105 P0106 P0107 P0108 P2226 P2227 P2228 P2229 P2230 P0110

#MAPsensor #Diagnostics #P0107

[jn-cale-bu-nce]

Thanks for explaining the measurement of the MAP sensor. This helped me a lot to check whether the sensor is still OK. greetings from Germany👍👍

[mkilptrick]

I really like how you explain things so clearly. With so few views on this video I feel like I'm part of the elite who want to understand the workings of cars.

[chrissmith]

Just to add a second comment Gerard, this is great for testing the map sensor assuming the wiring to the sensor is 100 percent good.
Like I found out when working on a 2008 Mitsubishi Outlander (vw engine from a Passat) the signal wire from the map was defective and no longer sending the information to the ECM.
This can be seen in real-time diagnostics info when the engine is running. No changes in map sensor data the ECM.
This in not a criticism and I hope it helps other out who come across the same issue ..
Keep up the good work Gerard!! 😁😁

[kgotsofatsoradipabe]

Thank you so much I have been experiencing that on my car and I resiliently fix my turbo

[johnjacksean]

Great vid Gerard! I was a bit confused when you took that focus for a spin and said to myself, that's not Ireland!? Until I read your bio and see you are in Oz 😁

[ZachBrimhall]

Just cleaned mine, immediate positive results in my old Land Rover LR3.

[user_who_user]

Great video! If your engine good, measure usually about 1 - 1.05 v (engine run)
It's about 30inHgvac

[bimmer]

Nice video dude.
Got a question.
I got e46 320d bmw, when I tap the gas pedal rpms do not jump instantly, it's so slow, need to keep the foot down completely so it can Rev a little bit, can this sensor cause this? Thanks.

[keithhoward]

Quick Question for you if you wouldn't mind. what is the sensor on top of the EGR valve at the rear of engine where you are taking the map sensor out an what does it do in the system thanks.

[firoznanji]

My salute to Gerard ! for this excellent video on MAP sensor, explained in details. Thank You. All the way from

[gamerepair]

The map sensor on my Mercedes C230 reads 7.83 PSI when the engine is running so I'm guessing that's not normal

[gixxert]

Finally on YouTube, , , , an accurate step by step on how to test map sensor. Well done 👏

[XTMish]

Thanks for uploading..

My audi a3 1.4tfsi rough misfires on cold start in the morning. But
when I unplug map sensor it start just fine. I
cleaned the map sensor etc but no difference.

[dcartellone]

Question, mine hasn’t failed yet and I want to replace it before it done. Will I notice any difference replacing it ahead of time?

[keirongreenaway]

Would this by any chance relate to a P0299 ?

[allmech_BMW_fault_finding]

Nice work Big Gerard. I just uploaded a geek fest video about the Wheatstone bridge haha. In fact I am absolutely going to make one and I will do it this week!

[Mechanicmckie]

Is this the same process as testing a boost pressure sensor ?

[hearditfirst]

I tested the sensor connector with a test light, I got 5v for power but the signal blinks fast. I can't read the voltage. Is that Normal for the signal to blink rapidly fast or is the voltage supposed to be stable readable

[Seanb]

I have a vw 2.0 tdi. Had an IAT sensor fault and low pressure fuel rail fault and the car would stall after starting. The IAT is also the MAP sensor. I've changed fuel pump, pressure sensor and regulator and the fault still persists. Could my Map sesnor be causing this?

[mikegalusha]

My map sensor is reading 11hg is this normal to read off the code reader, been having alot of issues with lean fuel. Thanks so much!