Volvo Owners Club Forum - View Single Post - D4 VEA 'check engine' light / EGR fault thread

Bican · Nov 2nd, 2021, 11:22

Hello,
I was not able read the whole thread but studied the issue comprehensively.

I bought used V70, D4204T20 (88kW D2) with around 175k kilometers on the clock. According to Volvo, the car is up to date with all modifications done by previous owner. In last two months the turtle started showing up. The error code is P00BC00.
I tried following:
- inspected leaks
- fitted a new MAF
- cleaned MAP
- cleaned EGR and cooler
The error shows up still. It leaves me puzzled. The error pops up usually when I brake using engine downhill.
I have data when from one of the occurrences. After the error EGR went to 0%.

I was checking also coincidence of exhaust and intake pressure reading.

AFAIK it leaves with options:
- sticking EGR - EGR clicks when closes otherwise the movement fluid.
- broken MAP sensor
- clogged pipe to the Exhaust Pressure sensor (EMAP). I had the sensor out and the pipe looked ok but could be clogged elsewhere.
I do have other data logged and can generate graphs from different sensors.
Thank you for any hints.

Nov 2nd, 2021, 11:22	#2496
Bican New Member Last Online: Jan 16th, 2024 10:41 Join Date: Sep 2021 Location: Divec	Engine braking Hello, I was not able read the whole thread but studied the issue comprehensively. I bought used V70, D4204T20 (88kW D2) with around 175k kilometers on the clock. According to Volvo, the car is up to date with all modifications done by previous owner. In last two months the turtle started showing up. The error code is P00BC00. I tried following: - inspected leaks - fitted a new MAF - cleaned MAP - cleaned EGR and cooler The error shows up still. It leaves me puzzled. The error pops up usually when I brake using engine downhill. I have data when from one of the occurrences. After the error EGR went to 0%. I was checking also coincidence of exhaust and intake pressure reading. AFAIK it leaves with options: - sticking EGR - EGR clicks when closes otherwise the movement fluid. - broken MAP sensor - clogged pipe to the Exhaust Pressure sensor (EMAP). I had the sensor out and the pipe looked ok but could be clogged elsewhere. I do have other data logged and can generate graphs from different sensors. Thank you for any hints. Last edited by Bican; Nov 2nd, 2021 at 11:29.