OBD-II Diagnostic Trouble Code
P0155
O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 1)
P
Powertrain
engine / trans
engine / trans
0
Generic
SAE standard
SAE standard
1
Fuel & air metering
55
O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 1)
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Generic
System
Powertrain
Standard
SAE J2012
Fault type
Circuit