Fault codes › P0150

P0150

O2 Sensor Circuit Malfunction Bank 2 Sensor 1

Generic code Fuel and Air Metering Medium severity Moderate repair
Free on OBD DashX

Want real-world data on P0150?

See which problems come with P0150, how often it shows up in other vehicles, and how to fix it — step by step.

  • Real-world fix data
  • How often it happens
  • Step-by-step repairs
See P0150 on OBD DashX No sign-up needed · available in 10 languages

iWhat P0150 means

  • The fault code P0150 indicates that there is an issue with the oxygen sensor circuit for bank 2, sensor 1. This may cause the engine to receive incorrect information about the air/fuel mixture, leading to poor performance or fuel economy.

!Possible symptoms

  • Illuminated check engine light
  • Poor fuel economy
  • Poor engine performance
  • Rough idle or stalling
  • Failed emissions test

?Possible causes

  • Failed oxygen sensor
  • Wiring or connection issues in the circuit
  • Failed engine control module (ECM)
  • Vacuum leaks or exhaust leaks
  • Fuel system issues

Related parts

  • Oxygen Sensor: This is one of the parts that fails very commonly. It measures the amount of oxygen to ensure proper combustion. Problems in the Oxygen Sensor lead to poor fuel economy

Possible solutions

  • Replace the oxygen sensor
  • Check and repair any damaged wiring or connections
  • Check for and repair any vacuum or exhaust leaks
  • Check and repair any fuel system issues
  • Replace the engine control module (ECM) if necessary
Free on OBD DashX

P0150 on OBD DashX

Real-world causes, how often this code shows up, and the fix — step by step.

Open P0150 No sign-up needed · available in 10 languages

Search fault codes

Scan your own car

Read and clear fault codes, live data and service resets with the CaRPM app.