When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
i have a 2001 psd and sometimes when i am passing cars my check engine comes on but then it goes away a few miles down the road. oil and everything else kept uptodate. what is going on?
When the SES is triggered under the circumstances you mentioned it is normally from overboost, or ICP out of range if you have a chip or tuner installed. If you do not have a power adder I would suspect a faulty exhaust backpressure sensor, or a plugged EBS tube (also possible with a chip).
The easiest way to narrow it down would be to take it to autozone or somewhere and have the codes pulled.