Fault code lookup

PowertrainP0155

Info

Severity: Info - usually nothing urgent

O2 Sensor Heater Circuit (Bank 2 Sensor 1)

41 brands affected · Generic SAE J2012 description.

Key terms: Catalytic converter: cleans the exhaust gases · Oxygen sensor: measures oxygen in the exhaust gas · Control module: a small computer that runs one part of the car · 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

The heater inside the oxygen sensor before the catalytic converter on the second bank of cylinders is not working.

2Common causes

  1. Faulty oxygen sensor heater
  2. Blown fuse
  3. Damaged wiring or connector
  4. Corroded connector
  5. Engine control module fault

3Can I drive?

Info · normally safe to drive

Usually safe to drive. Emissions and fuel economy may be slightly worse until it is fixed.

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 41

BrandCodeDescriptionSystem
Ashok Leyland CVP0155Hybrid Battery. Voltage Sensor. (Sensor C.) - Low Signal BrandPowertrain
BAIC MotorP0155O2 Sensor Heater Circuit Bank 2 Sensor 1 BrandPowertrain
Mercedes-BenzP0155O2 Sensor Heater Circuit (Bank 2 Sensor 1) SAEPowertrain
BMWP0155Sensor heater faulty BrandPowertrain
BYDP0155Oxygen sensor heater BrandPowertrain
CheryP0155Oxygen sensor heater BrandPowertrain
ChryslerP0155Oxygen sensor 2/1 heater circuit low BrandPowertrain
DaewooP0155O2 Sensor Heater Circuit Bank 2 Sensor 1 BrandPowertrain
DaihatsuP0155O2 sensor heater system B2S1 BrandPowertrain
DFFSP0155O2 Sensor Heater Circuit Bank 2 Sensor 1 BrandPowertrain
DFFXP0155Oxygen sensor heater BrandPowertrain
DFXKP0155O2 Sensor Heater Circuit Bank 2 Sensor 1 BrandPowertrain
EOBDP0155Syresensor värmekrets bank 2 sensor 1 BrandPowertrain
FiatP0155Lost communication with cluster/CCN BrandPowertrain
FordP0155O2 Sensor Heater Circuit (Bank 2 Sensor 1) SAEPowertrain
GeelyP0155Oxygen sensor heater BrandPowertrain
GMP0155HO2S heater performance bank 2 sensor 1 BrandPowertrain
Great WallP0155Oxygen sensor heater BrandPowertrain
HafeiP0155Oxygen sensor heater BrandPowertrain
HoldenP0155HO2S Heater Performance Bank 2 Sensor 1 BrandPowertrain
HondaP0155P0135/ /P1717/HO2S S2 FreezeData update BrandPowertrain
HyundaiP0155O2 Sensor Heater Circuit (Bank 2 Sensor 1) SAEPowertrain
IsuzuP0155O2 Sensor Heater Circuit (Bank 2 Sensor 1) SAEPowertrain
Land RoverP0155O2 Sensor Heater Circuit (Bank 2 Sensor 1) SAEPowertrain
MaseratiP0155Lost Communication With Cluster/CCN BrandPowertrain
MazdaP0155O2 Sensor Heater Circuit (Bank 2 Sensor 1) SAEPowertrain
MitsubishiP0155Oxygen sensor2 BrandPowertrain
NissanP0155Heated oxygen sensor 1 heater BrandPowertrain
OpelP0155HO2S heater performance bank 2 sensor 1 BrandPowertrain
PeroduaP0155O2 sensor heater system B2S1 BrandPowertrain
PeugeotP0155O2 Sensor Heater Circuit (Bank 2 Sensor 1) SAEPowertrain
PorscheP0155Heizung LSU Bank 2 BrandPowertrain
ProtonP0155Oxygen sensor2 BrandPowertrain
SaabP0155HO2S heater performance bank 2 sensor 1 BrandPowertrain
MG (SAIC)P0155O2 Sensor Heater Circuit Bank 2 Sensor 1 BrandPowertrain
SmartP0155O2 Sensor Heater Circuit (Bank 2 Sensor 1) SAEPowertrain
SprinterP0155O2 Sensor Heater Circuit (Bank 2 Sensor 1) SAEPowertrain
SuzukiP0155O2 sensor heater circuit malfunction(Bank2-Sensor1) BrandPowertrain
TataP0155O2 Sensor Heater Circuit Bank 2 Sensor 1 BrandPowertrain
ToyotaP0155Coolant temperature information is invalid BrandPowertrain
VolkswagenP0155heating circuit: malfunction BrandPowertrain

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 5

These 7-character codes are manufacturer-specific variants of P0155 and may be reported by some scan tools.

BrandCodeDescriptionSystem
SsangYongP015501No.3 Oxygen sensor heater - short circuit to B+ BrandPowertrain
SsangYongP015502No.3 Oxygen sensor heater - open or short circuit to ground BrandPowertrain
SsangYongP015503No.3 Oxygen sensor - faulty heating current BrandPowertrain
Mercedes-BenzP015504The heater of oxygen sensor 1 (cylinder bank 2) has an electrical fault. There is an internal fault. BrandPowertrain
Mercedes-BenzP015584Die Heizung der Lambdasonde 1 (Zylinderreihe 2) hat einen elektrischen Fehler. Es liegt ein Signal unterhalb des zulässigen Grenzwertes. BrandPowertrain

6Related codes

Browse Pxxx codes or P015xx codes.

OpenDTC - independent fault code reference