Rick's Free Auto Repair Advice

P0132 trouble code

Fix code P0132 trouble code

P0132 trouble code O2 Sensor Circuit High Voltage (Bank 1 Sensor 1) This sensor is located on the engine bank that houses #1 cylinder and is located BEFORE the catalytic converter

The PCM sends a reference voltage (usually 5-volts) to the variable resistor in the oxygen sensor and looks for a return voltage. Once the sensor is heated up, the PCM expects to see a varying voltage. If the PCM sees a constant high, it will set a trouble code P0132.

What causes a P0132 trouble code?

Since the voltage is high, the oxygen sensor is seeing a constantly rich fuel condition in the exhaust. Most auto parts stores will tell you to replace the oxygen sensor. WRONG! It may be bad, but the sensor itself is the most UNLIKELY cause of the trouble code.

The engine is getting too much fuel. High fuel pressure indicating a bad fuel pressure regulator, blocked fuel line, leaking fuel injectors are the most likely culprits. All that extra fuel causes a excessive rich condition that can’t be controlled by the PCM, Next, look for a bad MAP sensor that’s reporting a vacuum reading higher than actual engine vacuum.

image of oxygen sensor in exhaust pipe and wiring diagram


To learn how to replace an oxygen sensor, click here


© 2012 Rick Muscoplat


Posted on by Rick Muscoplat

Custom Wordpress Website created by Wizzy Wig Web Design, Minneapolis MN