Description OBD-II Trouble Code Description for P0427 Hummer Catalyst Temperature Sensor Low What does this mean? OBD2 Code P0427 Hummer definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most…
Category: HUMMER
Hummer P0428 Catalyst Temperature Sensor High Input Bank 1 Sensor 1
Description OBD-II Trouble Code Description for P0428 Hummer Catalyst Temperature Sensor High What does this mean? OBD2 Code P0428 Hummer definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most…
Hummer P0426 Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1
Description OBD-II Trouble Code Description for P0426 Hummer Catalyst Temperature Sensor Range/Performance What does this mean? OBD2 Code P0426 Hummer definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most…
Hummer P0425 Catalyst Temperature Sensor Circuit Bank 1 Sensor 1
Description OBD-II Trouble Code Description for P0425 Hummer Catalyst Temperature Sensor What does this mean? OBD2 Code P0425 Hummer definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most important…
Hummer P0424 Heated Catalyst Temperature Below Threshold Bank 1
Description OBD-II Trouble Code Description for P0424 Hummer Heated Catalyst Temperature Below Threshold What does this mean? OBD2 Code P0424 Hummer definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the…
Hummer P0423 Heated Catalyst Efficiency Below Threshold Bank 1
Description OBD-II Trouble Code Description for P0423 Hummer Heated Catalyst Efficiency Below Threshold What does this mean? OBD2 Code P0423 Hummer definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the…
Hummer P0420 Catalyst System Efficiency Below Threshold Bank 1
Description OBD-II Trouble Code Description for P0421 Hummer Warm Up Catalyst Efficiency Below Threshold What does this mean? OBD2 Code P0421 Hummer definition: Basically this means that the oxygen sensor downstream of the catalytic converter on bank 1 is detecting that the converter is not working as efficiently as it should be (according to specs)….
Hummer P0421 Warm Up Catalyst Efficiency Below Threshold Bank 1
Description OBD-II Trouble Code Description for P0422 Hummer Main Catalyst Efficiency Below Threshold What does this mean? OBD2 Code P0422 Hummer definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the…
Hummer P0419 Secondary Air Injection System Relay B Circuit Malfunction
Description OBD-II Trouble Code Description for P0420 Hummer Catalyst System Efficiency Below Threshold What does this mean? OBD2 Code P0420 Hummer definition: The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream…
Hummer P0417 Secondary Air Injection System Switching Valve B Circuit Shorted
Description OBD-II Trouble Code Description for P0418 Hummer Secondary Air Injection System Control “A” Circuit What does this mean? OBD2 Code P0418 Hummer definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one…