PowertrainP0154
CautionSeverity: Caution - get it checked when you can
O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · Bank 2: the side of the engine containing cylinder 2 · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
This code is in the fuel, air and oxygen sensor range, which also includes coolant temperature faults.
2Common causes
- Dirty or faulty mass air flow sensor
- Vacuum or intake air leak
- Weak fuel pump or clogged fuel filter
- Faulty fuel injector
- Faulty oxygen sensor
- Wiring or connector fault
3Can I drive?
Have it diagnosed if the engine runs badly or the code keeps returning. Because this range includes coolant temperature sensors, watch the temperature gauge: if it climbs into the red, or the engine overheats or stalls, stop safely and get professional help.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 37
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0154 | Hybrid Battery. Discharge. - Current Too High Brand | Powertrain |
| BAIC Motor | P0154 | O2 Sensor Circuit No Activity Detected Bank 2 Sensor 1 Brand | Powertrain |
| Mercedes-Benz | P0154 | O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) SAE | Powertrain |
| BMW | P0154 | Open circuit Brand | Powertrain |
| BYD | P0154 | Oxygen sensor no activity Brand | Powertrain |
| Chery | P0154 | Oxygen sensor no activity Brand | Powertrain |
| Chrysler | P0154 | Oxygen sensor 2/1 circuit open Brand | Powertrain |
| Daewoo | P0154 | No Left Hand Oxygen Sensor Signal Brand | Powertrain |
| DFFS | P0154 | O2 Sensor Circuit No Activity Detected Bank 2 Sensor 1 Brand | Powertrain |
| DFFX | P0154 | Oxygen sensor no activity Brand | Powertrain |
| DFXK | P0154 | Downstream oxygen sensor circuit fault Brand | Powertrain |
| EOBD | P0154 | O2 senzor območje 2 senzor 1, ni zaznane aktivnosti vezja Brand | Powertrain |
| Geely | P0154 | Oxygen sensor no activity Brand | Powertrain |
| GM | P0154 | HO2S circuit insufficient activity bank 2 sensor 1 Brand | Powertrain |
| Great Wall | P0154 | Oxygen sensor no activity Brand | Powertrain |
| Hafei | P0154 | Oxygen sensor no activity Brand | Powertrain |
| Holden | P0154 | HO2S Circuit Insufficient Activity Bank 2 Sensor 1 Brand | Powertrain |
| Honda | P0154 | O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) SAE | Powertrain |
| Hyundai | P0154 | O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) SAE | Powertrain |
| Isuzu | P0154 | O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) SAE | Powertrain |
| Land Rover | P0154 | O2 sensor circuit no activity detected Brand | Powertrain |
| Mahindra | P0154 | O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) SAE | Powertrain |
| Mitsubishi | P0154 | O2S/LAFS 2(front) no activity Brand | Powertrain |
| Nissan | P0154 | Heated oxygen sensor 1 Brand | Powertrain |
| Opel | P0154 | HO2S circuit insufficient activity bank 2 sensor 1 Brand | Powertrain |
| Peugeot | P0154 | O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) SAE | Powertrain |
| Porsche | P0154 | Lambda-Sonde vor Kat Bank 2: keine Aktivität Brand | Powertrain |
| Proton | P0154 | O2S/LAFS 2(front) no activity Brand | Powertrain |
| Renault | P0154 | O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) SAE | Powertrain |
| Saab | P0154 | HO2S circuit insufficient activity bank 2 sensor 1 Brand | Powertrain |
| MG (SAIC) | P0154 | Oxygen Sensor Sensor 01 Bank 1 Slow Response Brand | Powertrain |
| Sprinter | P0154 | O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) SAE | Powertrain |
| Subaru | P0154 | O2 Sensor Circuit (Open) Brand | Powertrain |
| Suzuki | P0154 | O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) Brand | Powertrain |
| Tata | P0154 | O2 Sensor Circuit No Activity Detected Bank 2 Sensor 1 Brand | Powertrain |
| Toyota | P0154 | O2 Sensor Circuit No Activity Detected Bank 2 Sensor 1 Brand | Powertrain |
| Volkswagen | P0154 | Oxygen (Lambda) Sensor B2 S1: No Activity Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 2
These 7-character codes are manufacturer-specific variants of P0154 and may be reported by some scan tools.
6Related codes
Browse Pxxx codes or P015xx codes.