2009 Volkswagen P0174: What It Means & Is It Safe to Drive?
P0174 on the 2009 Volkswagen: 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 2009 Volkswagen
- 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 2009 Volkswagen, repairs for P0174 typically fall between $100 and $600, depending on the root cause and labor rates in your area.
Known issues on Volkswagen
VW VR6 3.6L P0174 Bank 2 lean is typically a vacuum leak or a dirty MAF sensor. The VR6's narrow-V configuration makes finding Bank 2 vacuum leaks challenging. Use a smoke machine—the intake manifold gaskets on higher-mileage VR6 engines can harden and leak.
Most commonly affected models
Passat V6 3.6L 2012–2016Touareg V6 3.6L 2011–2018CC 3.6L 2009–2017