P0157 OBD Trouble Code

1 result found

P0157 - GM
Type Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description

HO2S Circuit Low Input Conditions

Location Bank 2 Sensor 2
Cause

DTC P0100, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123, P0125, P0151, P0200, P0372 and P1351 not set ECT sensor input more than 118°F, AIR and Catalyst Tests not active, throttle angle 3-20%, system in closed loop, A/F ratio at 14.6-14.8, then the PCM detected that the HO2S-22 signal was below 39 mv for 38 seconds

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