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Home › Dodge and Ram › 2015 › ProMaster City Base › Repair and Diagnosis › Engine Performance › System › 2.4L - DTCS P2122 To U1504 › DTC Troubleshooting › U0300-Internal Control Module Software Incompatibility › Notes

U0300-Internal Control Module Software Incompatibility: Notes

Perform the COMMUNICATION PRE-DIAGNOSTIC PROCEDURE. Refer to COMMUNICATION PRE-DIAGNOSTIC PROCEDURE .