2008 Volvo P0174: What It Means & Is It Safe to Drive?
P0174 on the 2008 Volvo: System Too Lean (Bank 2). Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
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What this code means
Same as P0171 but for bank 2. The engine is running too lean on the side that contains cylinder 2.
Common causes on the 2008 Volvo
- Vacuum leaks affecting bank 2
- Faulty MAF or O2 sensor
- Fuel delivery issues
Symptoms
- Check Engine Light
- Rough idle, hesitation
- May appear with P0171 on V6/V8 engines
Typical fixes
- Smoke test for vacuum leaks
- Inspect intake gaskets and hoses
- Check fuel pressure and filter
Repair cost range
For a 2008 Volvo, repairs for P0174 typically fall between $100 and $600, depending on the root cause and labor rates in your area.
Known issues on Volvo
Volvo B6294T inline-six P0174 Bank 2 lean (rear cylinders 4–6) often comes from a cracked intake manifold boot or a failing MAF sensor. The B6294T's intake air temperature sensor can also give incorrect readings that affect fueling. Clean the MAF and inspect the air intake hose for cracks.
Most commonly affected models
XC90 B6294T 2003–2014S80 B6294T 2007–2012XC70 T6 2008–2014