What does code P0174 mean on a Land Rover and is it safe to drive?
P0174: System Too Lean (Bank 2). Here's what it means on your Land Rover, what usually causes it, what repairs typically cost, and how safe it is 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 for your Land Rover
- 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 Land Rover, repairs for P0174 often fall between $100 and $600, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Land Rover
Land Rover 3.0L supercharged V6 P0174 alongside P0171 typically indicates a cracked charge air cooler hose or a boost leak post-intercooler—unmetered air bypasses the MAF and causes symmetric lean conditions. Smoke test the boost system before replacing the MAF sensor.
Most commonly affected models
Range Rover 3.0L V6 2013–2020Discovery Sport 2.0T 2015–2022Range Rover Sport 3.0L 2014–2020