2007 Mitsubishi P0174: What It Means & Is It Safe to Drive?
P0174 on the 2007 Mitsubishi: 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 2007 Mitsubishi
- 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 2007 Mitsubishi, repairs for P0174 typically fall between $100 and $600, depending on the root cause and labor rates in your area.
Known issues on Mitsubishi
Mitsubishi V6 P0174 Bank 2 lean on the 6G75 and 6G72 typically points to a dirty MAF sensor or a vacuum leak at the intake manifold. On higher-mileage Endeavor and Eclipse V6, the intake manifold gaskets can harden and cause small vacuum leaks—smoke test after cleaning the MAF.
Most commonly affected models
Endeavor 3.8L 6G75 2004–2011Eclipse V6 3.8L 2006–2012Outlander V6 3.0L 2004–2006