What could be any causes for a code p0171 combined with p0301, p0302, p0304 in a 2004 Volvo s-40

Question

I have a2004 Volvo s-40 and it has all those codes lately. I had timing chain done, plugs replaced, and still it wants to cut off at a red light. That it it shakes violently, idled very poor like it's about to cut off. It takes a few tires to finally get it started in morning. I livein the south. It has 80k miles.

Answer 1

Hi there,

P0171 indicates the fuel mix is too lean on bank 1. Here is a list of possible causes.

P0171 - System Too Lean Bank 1

Read more: https://www.autocodes.com/p0171.html

P0301, P0302 and P0304 indicate a misfire on cylinders 1, 2 and 4. Here is a list of possible causes.

P0301 VOLVO - Cylinder 1 Misfire Condition

Read more: https://www.autocodes.com/p0301_volvo.html