GMC Envoy P0160: O2 Sensor → No Activity Detected B2S2

  P0160 is a standard OBDII trouble code. It has the same meaning for any vehicle with OBDII, including the GMC Envoy. When a vehicle has P0160, the PCM/ECM is not detecting any activity from the sensor.  It doesn’t mean that the O2 sensor isn’t getting power, but that the voltage isn’t changing, which is … Read more

GMC Envoy P0410: Secondary Air Injection System → Malfunction

P0410 is a generic OBDII trouble code.  This means that it has the same meaning for the GMC Envoy as it would any other vehicle.  It is letting you know that there is an issue with the secondary air injection system. P0410: Secondary Air Injection System → Malfunction  The secondary air injection system injects air … Read more

GMC Envoy P0506: Idle Air Control – RPM Lower than Expected

  P0506 is a common OBDII trouble code. It is typically triggered when the engine idle speed is lower than the predetermined limit set by the manufacturer. It is a generic code, which means that it has the same meaning for the GMC Envoy as it would any other vehicle.    P0506 Symptoms:  Envoy Most … Read more

GMC Envoy P0505: Idle Air Control System- Malfunction

P0505 is an OBDII code that deals with the idle air control system in the GMC Envoy.  It’s a generic code, which means that it has the same meaning for the Envoy as it would any other vehicle (Envoy or not). P0505:  Idle Air Control System:  Malfunction When P0505 is triggered, it is typically caused … Read more

GMC Envoy P0158: Oxygen Sensor High Voltage (Bank 2 -Sensor 2)

  P0158 is an OBDII code that occurs in many vehicles, including the GMC Envoy. The code is triggered when: The voltage at the O2 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 P0157: Oxygen Sensor Low Voltage (Bank 2 -Sensor 2)

P0157 is a common OBDII code that occurs in the GMC Envoy, it’s a general code (this means that it has the same meaning for any vehicle). This code typically indicates that there is an issue with the wiring or harness going to the sensor, or the sensor itself is bad.  There are other things that … Read more

GMC Envoy P0139: O2 Sensor Slow Response (Bank 1 -Sensor 2)

P0139 is a common OBDII code that occurs in many vehicles, including the GMC Envoy. The code is triggered when there is an issue with the response time from the oxygen (O2) sensor when switching voltage levels. The Oxygen sensors are responsible for helping the ECM meter oxygen levels in the exhaust, and helping to … Read more