Error Codes P00BC and P04D9

[Adndy]

Hi,

I have a 2014 S60 VEA D4. Recently I have been getting reduced performance messages and engine management lights coming up on the dash. The error codes are P00BC and P04D9. I have had the EGR and cooler out twice now and cleaned them as well as I could. Car has done nearly 180 000mls so I'm guessing Volvo won't give any good will towards the repair. My question is are the codes related? Is one code triggering the other or do I have 2 separate issues?

[JamesAtthews]

Hi Andy

I have had both of these, and I cleaned the egr cooler and it resolved them both. If I recall, the p04d9 is reduced egr flow, and p00bc code is related to maf flow, but for me it was linked to the same code, as once cleaned, both codes went.

I would also look at the sensor connected to the metal tube to the rear right of the engine block. It is a pressure sensor on the exhaust manifold which is known to block and I believe cause the p00bc code. Certainly worth a look while you've got the spanners out!

Cheers

[Adndy]

Originally Posted by JamesAtthews

Hi Andy

I have had both of these, and I cleaned the egr cooler and it resolved them both. If I recall, the p04d9 is reduced egr flow, and p00bc code is related to maf flow, but for me it was linked to the same code, as once cleaned, both codes went.

I would also look at the sensor connected to the metal tube to the rear right of the engine block. It is a pressure sensor on the exhaust manifold which is known to block and I believe cause the p00bc code. Certainly worth a look while you've got the spanners out!

Cheers

Thanks for the reply James.
The P00BC seems to have been replaced by a P0100 code? I think they both point to the MAF. I have noticed that these codes only seem to come up if I'm doing a short journey or very soon after start up, they never appear on a long journey. Not sure if there's any relevance to that but just something I've noticed.
I have had the EGR and cooler out twice now to clean them although it's very hard to tell how clean the cooler actually is. The top looks spotless but you can't see deep into it. Might have another go at it this weekend. It's more annoying than anything else. The car passed its MOT a few days ago. Emissions were fine so it's not something I'm overly concerned about. I'm more worried about any further damage that could be being caused by not fixing the issue.
If I do have another look at it this weekend I will also have a look at the sensor you mentioned.
Thanks again and any other thoughts or ideas anyone has please feel free to chime in.

Andy

[JamesAtthews]

Never seen the other code, so cannot comment on that. When I've cleaned mine, I've used Mr muscle oven cleaner and a jet wash. It takes about an hour or so of repeated attacks to get it clear, and it lasts about a year, timed perfectly for the mot. I've tried other cleaners and not had any joy with them.