DTC codes / Volkswagen codes / P1343
P1343 on a Volkswagen means the engine control module (ECM) has detected a short to ground on the output circuit that fires ignition coil number 2. The ECM commands the coil to spark by grounding its control wire, and it monitors the circuit for abnormal current flow; this code sets when the circuit stays grounded when it should not, preventing reliable coil operation.
Guidance is general and written for Volkswagen vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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