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Discussion Starter · #1 · (Edited)
So over the weekend I replaced my radiator. During this process you probably know you have to take off intercooler hoses to access the radiator cleanly. Reinstalled everything, cinched all clamps down, reverse process etc. Go for test drive and car only hits 6 psi of boost. I reset ECU and all that jazz to get the same result. Codes by regular non-Volvo reader are P0236 and P0238. Intercooler / Turbo something or another(cannot remember now and am at the office).

According to an old post or two, the MAP sensor could be the issue, and I triple checked all intercooler hoses(reinstalled all of them), and checked the connector. It is a tight fit, and I also noticed a bit of corrosion. Could the sensor be bad? Again, this is the sensor to the intercooler outlet (correction) on driver side. Supposedly known as an Intercooler Pressure Sensor.

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Its actually outlet port of the intercooler. And if plug/pins have corrosion, i would start by cleaning that first.
 

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Discussion Starter · #3 ·
True, and, I did clean the contact points. Covered just about every possible reason for the boost lost.
 

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Have you measured if you have supply voltage and ground at the plug with ignition on?
 

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Discussion Starter · #5 ·
Have you measured if you have supply voltage and ground at the plug with ignition on?
Negative. But, before I did the radiator, there were no issues.
 

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Irrelevant. If you were minding some business in that area you could've easily pinched, ripped, crushed whatever some wires.
Please let us not do the guess game. Fixing cars in the internet is as bad already.
Get a multimeter and test those pins for voltage and ground.
 

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Discussion Starter · #7 ·
Irrelevant. If you were minding some business in that are you could've easily pinched, ripped, crushed whatever some wires.
Please let us not do the guess game. Fixing cars in the internet is as bad already.
Get a multimeter and teat those pins for voltage and ground.
I agree, however I have inspected wires, removed the interacted part of the harness itself, cleaned contact points, reinstalled. Guessing not an option. I will volt test and carry on. Thanks
 

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If pins and wires look good, there is a chance that trying to pull the connector or being rough with the hardware may have damaged the MAP sensor. They are not that expensive to replace once you rule everything else out.
 

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Discussion Starter · #9 ·
Follow ups are good I think, so people can find info in the future.

The code P0238, boost something or another (cannot remember now), was fixed by the MAP sensor. Problem solved.

Bosch part number 0261230296.
 
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