The P0208 code on your 2019 Ram 1500 indicates an open circuit condition in the cylinder 8 fuel injector circuit. This specific fault type—an open circuit—helps narrow the diagnostic approach compared to a general malfunction code.
Finding Cylinder 8 on the HEMI
The 2019 Ram 1500 offers the 5.7L HEMI V8 (and the 3.6L Pentastar V6 which has no cylinder 8). On the HEMI, cylinder numbering places 2-4-6-8 on the passenger side. Cylinder 8 is the rearmost passenger-side cylinder, adjacent to the firewall.
What an Open Circuit Means
An open circuit indicates a break in the electrical path—either the injector coil has failed open internally, a wire is broken, or the connector has lost continuity. Unlike a short circuit, current cannot flow at all, causing the injector to be completely non-functional.
Diagnosis Approach
Start with a resistance test on the injector—an open coil will show infinite resistance rather than the normal 10-15 ohm range. If the injector tests good, the open is in the wiring. Check connector pins for proper contact. Use a wiring diagram to trace the circuit and test continuity from connector to PCM. The rear location makes wiring susceptible to damage from exhaust heat.
Repair Solutions
A failed-open injector requires replacement. The HEMI's fuel rail makes injector access straightforward once the intake manifold is removed. If wiring is damaged, repair using proper automotive connectors and heat-resistant materials. The proximity to exhaust necessitates heat-resistant loom protection. Clear codes and verify the repair by monitoring injector operation.