DTC codes / Chrysler codes / P1274
P1274 on Chrysler vehicles means the powertrain control module (PCM) has detected that the fuel injector circuits are not wired in the correct firing order or that the injector harness connectors have been swapped. The PCM compares injector circuit behavior during cranking and running to a known good pattern and flags this code when the electrical sequence does not match the engine's firing order.
Guidance is general and written for Chrysler vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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