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2014 Ram 1500 Big Horn 5.7L Oxygen sensors
Hello all, I'm having trouble with this truck. Keeps throwing p0138 B1S2 oxygen sensor heater curciut high code. We have replaced both down stream o2. I have swapped left and right sensors and code stays on B1. Ive tested for the signal from the PCM. I do ...
FIX posted 10/30/2025
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Message Closed w/FIX
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Related Documents & Media | VIN | 1C6RR7GTXE |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 8-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Affected | Oxygen Sensors |
| Conditions | P0138, Heater Circuit High. |
Message Closed w/FIX
Vehicle Data
2014 Ram 1500 Big Horn
| VIN | 1C6RR7GTXE |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 8-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Affected | Oxygen Sensors |
| Conditions | P0138, Heater Circuit High. |
Video