GMC Sierra 1500
2014-2018 GMC Sierra 1500 5.3 gas
Published definition: HO2S Circuit High Voltage Bank 1 Sensor 2
Open P0138 guide for 2014-2018 GMC Sierra 1500 5.3 gasBrowse all guides for GMC Sierra 1500DTC code
P0138 Diagnostic Guides by Vehicle
P0138 is used in the published guides here for a high-voltage condition in an oxygen-sensor circuit. Sensor naming, circuit details, and diagnostic checks depend on the exact vehicle configuration.
Definitions in published guides
- HO2S Circuit High Voltage Bank 1 Sensor 2
- Heated Oxygen Sensor Circuit High Voltage
Vehicle-specific coverage
Choose a P0138 diagnostic guide
Chevrolet Silverado 1500
2019-2025 Chevrolet Silverado 1500 5.3 gas
Published definition: Heated Oxygen Sensor Circuit High Voltage
Open P0138 guide for 2019-2025 Chevrolet Silverado 1500 5.3 gasBrowse all guides for Chevrolet Silverado 1500Ford F150
2015-2025 Ford F150 2.7 EcoBoost
Published definition: P0138 Diagnostic Guide
Open P0138 guide for 2015-2025 Ford F150 2.7 EcoBoostBrowse all guides for Ford F150Ram 1500Classic
2019-2024 Ram 1500Classic 3.6PentastarGas
Published definition: P0138 Diagnostic Guide
Open P0138 guide for 2019-2024 Ram 1500Classic 3.6PentastarGasBrowse all guides for Ram 1500ClassicRam 1500DT
2019-2025 Ram 1500DT 3.6PentastarGas
Published definition: P0138 Diagnostic Guide
Open P0138 guide for 2019-2025 Ram 1500DT 3.6PentastarGasBrowse all guides for Ram 1500DTRam 2500HD
2019-2025 Ram 2500HD 6.4HEMIGas
Published definition: P0138 Diagnostic Guide
Open P0138 guide for 2019-2025 Ram 2500HD 6.4HEMIGasBrowse all guides for Ram 2500HD