P0157

Severity medium

AUTO

The engine control module detects a voltage that is too low from the downstream oxygen sensor on bank 2, sensor 2. This usually points to a

OBD-II scanner plugged into a car diagnostic port showing a trouble code
OBD-II codes: read the code, test the component, clear it and re-check.

What it means

The engine control module detects a voltage that is too low from the downstream oxygen sensor on bank 2, sensor 2.

How to fix P0157

  1. Inspect Connector and Wiring
  2. Measure Sensor Voltage at Idle
  3. Test Sensor Heater Circuit

Related errors

P0137P0125P0113P0440P0442P0446P0455P0456

Source: open OBD-II DTC database

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