P0150O2 Sensor Circuit Bank 2 Sensor 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- The oxygen sensor before the catalytic converter on bank 2 (sensor 1) is the main control sensor for the mixture. It is either a switching sensor (about 0.1 V lean to 0.9 V rich) or a wide-band sensor that works with a pump current evaluated by an interface chip. Bank 2 exists only on engines with two exhaust manifolds. P0150 is the bank 2 counterpart of P0130. Ford used it up to 2010 as the collective code for wiring faults of the bank 2 wide-band sensor reported by the interface chip and has used specific codes since 2011 (P0151, P0152, P2240/P2247/P2254). Other makers fill it as for bank 1 – an interface voltage check, a collective code or a plausibility test. No bank 2-specific manufacturer thresholds were found. If P0130 and P0150 appear together, look for a shared cause such as supply, ground or the control module. A stored code usually switches mixture control to open loop and suspends adaptation and converter monitoring.
- What you may notice
- Check engine light on
- Higher consumption, possibly rough running (no mixture control)
- Higher emissions, possible emissions test failure
- Likely causes
- LikelyWiring or connector of the bank 2 upstream sensor damaged, corroded or wet
- LikelyOxygen sensor faulty internally
- PossibleExhaust leak ahead of the sensor or mixture fault (plausibility versions)
- RareControl module or sensor interface chip faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.