Ram Diagnostic Trouble Codes

Common OBD2 fault codes found on Ram vehicles with model-specific causes, known issues, TSBs, and adjusted repair cost estimates. Each guide is tailored for Ram owners.

Electrical

P0521High

Engine Oil Pressure Sensor/Switch Range/Performance

Ram 1500 • 2013-2018

5.7L Hemi with MDS. P0521 here often means genuine low pressure at hot idle, not a bad sensor. Chrys...

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