P2172 Diagnostic Trouble Code Discussion for June 2023
High Airflow / Vacuum Leak Detected (Instantaneous Accumulation)
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| Help Request | Posted | |
| 2014 Ram 2500 SLT 6.4L MIL Lamp on VIN: 3C6UR5CJ1E P2172: unexpected airflow. This truck starts running rough after pulling a trailer for awhile and letting off the gas. Pid data shows lft both around -12 sft around 0. I don't see any obvious vacuum leaks, I tried unplugging the maf and map, it doesn't change the fuel trims. Raising... |
June 06, 2023 |
