P0132 Code – O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)

Meaning:

The P0132 triggers when the heated O2 sensor in bank 1 sensor 1 is giving a higher voltage reading than it should
When the heated O2 sensor in bank 1 sensor 1 is giving a higher voltage reading than it should, P0130 happens

The heated O2 sensor in bank 1 sensor 1 is giving a higher voltage reading than it should. For most vehicles the code comes when voltage exceeds 1.5V.

Main Symptoms:

Generally doesn’t come with symptoms. However, in some cases the Check Engine Light may come on and fuel economy may reduce.

Possible Causes:

  • Fuel temp is excessively high
  • Short, open or broken wire in O2 sensor circuit

Diagnostic Steps:

  • Visually inspect all wiring to O2 sensor for loose, open or short connections
  • Use a wiggle test to determine where the voltage drops out
  • Using an OBD2 scanner, check whether sensor 1 of bank 1 is switching properly

Read More: OBD2 Codes List: Meaning, Fixes, and Free Download