PowertrainP015A
CautionSeverity: Caution - get it checked when you can
O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1)
Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · Bank 1: the side of the engine containing cylinder 1 · 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 30
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| BAIC Motor | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| BYD | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| Chery | P015A | Oxygen sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| Chrysler | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| Daewoo | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| DFFS | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| DFFX | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| DFXK | P015A | Front oxygen response too slow Brand | Powertrain |
| EOBD | P015A | O2-sensor forsinket respons - fed til mager række 1 sensor 1 Brand | Powertrain |
| Geely | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| GM | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| Great Wall | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| Hafei | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| Holden | P015A | HO2S Delayed Response Rich to Lean Sensor 1 Brand | Powertrain |
| Honda | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| Hyundai | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| Isuzu | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| Land Rover | P015A | O2 Sensor Delayed Response - Rich To Lean Bank 1 Sensor 1 Brand | Powertrain |
| Mahindra | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| Mitsubishi | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| Nissan | P015A | Air/Fuel sensor 1 (bank 1) /P015B Brand | Powertrain |
| Opel | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| Peugeot | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| Proton | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| Renault | P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) SAE | Powertrain |
| Saab | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| MG (SAIC) | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 Brand | Powertrain |
| Subaru | P015A | Improved diagnosis of and P015B Brand | Powertrain |
| Toyota | P015A | O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 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 1
These 7-character codes are manufacturer-specific variants of P015A and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P015A00 | Front wide band oxygen sensor positive delay response Brand | Powertrain |
6Related codes
Browse Pxxx codes or P015xx codes.