P1391 — Jeep — Intermittent Loss of CMP Or CKP

P1391 (Jeep): Intermittent Loss of CMP Or CKP — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Intermittent Loss of CMP Or CKP. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain