CEL and barometric pressure sensor error code

Saratoga Gal · Post by **Saratoga Gal** » 09 Jul 2018, 18:37

Hello new to this forum,

I have a 1998 Volvo V70 wagon that has an annoying CEL light. My car has 198K miles and has been meticulously cared for. I have replaced this barometric pressure sensor before and the CEL has gone out. The CEL came on again after my son hit a very bad pot hole. So I bought another Bosch sensor thinking that it would solve the problem but the CEL will not go out. I read here in this forum that sometimes the wiring harness gets corroded or that the wiring insulation breaks down. My ODB meter shows an error code of P0107. Would a bad wiring harness in the vicinity of the barometric pressure sensor result in the same error code? If so does anyone know what part the wiring harness is and is it easy to replace? I am a DYI but I have limited car mechanics experience. Many thanks in advance for any and all of your help. I am on the verge of pulling my hair out! Please help before I go bald!!!

Post by **RickHaleParker** » 09 Jul 2018, 23:29

Follow this link to message thread on the subject.

Post by **abscate** » 10 Jul 2018, 03:57

Welcome Saratoga Gal!

You might have to clear that code with a code reader or Go through several drive cycles to makeit go away. In that link above, the MAP and AC sensors share the power bus and failures on either of these can pop that code. If you can find the right wiring code for your car ( we don’t host them here by legal agreement with Volvo, but users can locate and post them in threads) that might help us on the diagnostic path.

If you come South a bit, you can join us for ALBANY Volvo fest sometime and have us look it’s over , too.

It’s free, bad puns are the only cost of attending.

Saratoga Gal · Post by **Saratoga Gal** » 10 Jul 2018, 14:20

I love my Volvo but smacking it around seems a bit harsh! Whack the MAP sensor with a hammer? A most curious fix indeed but I suppose worth trying. Let it be known that I am a pacifist at heart. I have a OBD-II meter that can clear codes but I have had no success so far. I will try anything if it keeps me from going bald soon.

I will give an update. Thanks again for all your help and I have nothing against bad puns so Volvo fest might be in my future!

Post by **jimmy57** » 10 Jul 2018, 14:29

the supply voltage, reference voltage, is shared with a/c high pressure sensor and the vertical accel sensor. The accel sensor is on the subframe below a/c compressor and may have been damaged.

WhatAmIDoing · Post by **WhatAmIDoing** » 10 Jul 2018, 14:37

Last time I got this code, I pulled the sensor, tapped it against a hard surface a few times, and reinstalled. No more code. But since you said you had replaced the sensor, I doubt this is the issue. I think it lies somewhere in the wiring.