P0150
Medium SeverityO2 Sensor Circuit (Bank 2, Sensor 1)
Emissions System
What Does P0150 Mean?
General fault with the upstream O2 sensor on bank 2 of a V-engine.
Common Fix
Replace upstream O2 sensor bank 2
Estimated Cost (DIY)
$30 - $100
Symptoms
- ⚠️Check engine light
- ⚠️Poor fuel economy
- ⚠️Rough running
- ⚠️Failed emissions
Related Symptoms
Common Causes
How to Diagnose P0150
- 1Inspect wiring and connector
- 2Monitor sensor voltage
- 3Check for exhaust leaks
- 4Replace if faulty
OEM Diagnostic Flowchart
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Related Resources
Repair guides, symptom pages, and wiring diagrams related to P0150.
OEM Manual Evidence
Browse →A L L Diagnostic Trouble Codes ( DTC ) — 2013 Infiniti G37 Convertible V6-3.7L (VQ37VHR) Service Manual | Operation CHARM Operation CHARM :...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 Infiniti G37 Coupe V6-3.7L (VQ37VHR) Service Manual | Operation CHARM Operation CHARM : Car r...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 Infiniti G37 Sedan V6-3.7L (VQ37VHR) Service Manual | Operation CHARM Operation CHARM : Car r...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 Infiniti G37x Coupe AWD V6-3.7L (VQ37VHR) Service Manual | Operation CHARM Operation CHARM :...
Related Symptoms
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Exact Repair Workflows
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Related Codes
Upstream O2 sensor on bank 2 is stuck low, reading lean.
Heater failure in the upstream O2 sensor on bank 2.
General fault with the upstream O2 sensor on bank 1. This sensor monitors exhaust oxygen to control fuel mixture.
Frequently Asked Questions
- Is bank 2 sensor 1 upstream or downstream?
- Sensor 1 is always upstream (before the catalytic converter). Sensor 2 is downstream (after the cat).
- Why does my V6/V8 have bank 2 codes?
- V-engines have two exhaust banks. Bank 2 is the opposite side from cylinder 1.
Related Repair Guides
If your vehicle has triggered P0150, these DIY repair guides may help: