GMC Envoy P0138: Oxygen Sensor High Voltage (Bank 1 -Sensor 2)

  P0138 is a common OBDII code that occurs in many vehicles, including theGMC Envoy. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself There are also some less likely problems … Read more

GMC Envoy P0133: Oxygen Sensor Slow Response (Bank 1 -Sensor 1)

  P0133 is a common OBDII code that occurs in many vehicles, including theGMC Envoy. The code is triggered when there is an issue with the response time from the oxygen (O2) sensor when switching voltage levels. The O2 sensor is responsible for helping the ECM meter oxygen levels in the exhaust in order to … Read more

GMC Envoy P0132: Oxygen Sensor High Voltage (Bank 1 -Sensor 1)

    P0132 is a common OBDII code that occurs in many vehicles, including the GMC Envoy. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. The air fuel sensor stays in rich biased mode for too long. There are also some less likely problems that can … Read more

GMC Envoy P0131: Meaning, Causes, How to Fix

The P0131 code is an OBD-II diagnostic trouble code that indicates low voltage in the GMC Envoy’s Oxygen (O2) sensor circuit for Bank 1, Sensor 1 (B1S1). This sensor plays a crucial role in maintaining optimal engine performance by detecting the air-fuel ratio in the exhaust, then sending this data to the Envoy’s engine control … Read more

GMC Envoy P0150: O2 Sensor Circuit Malfunction (Bank 2 -Sensor 1)

P0150 is a very common OBDII code that occurs in the GMC Envoy. It is typically caused when the Oxygen Sensor voltage is not within normal operating conditions. GMC Envoy P0150 Symptoms Typically, the only symptom of P0150 is going to be the service engine soon light. In some cases, there can be other symptoms … Read more