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This technical bulletin is part of Diesel Help’s member-only diagnostic library.
When fault codes stop making sense, the issue is often understanding how the system you’re working on is designed to operate.
Start here:
Know the diesel fuel system you are diagnosing
Tagged DPF related fault codes, engine derated, engine light on, engine over revving, Excessive crankcase ventilation, excessive smoke, misfire, of oil vapor from the breather, oil seal leaks, P1498 - Clogged diesel/petrol particulate filter, P243A - Diesel/petrol particulate filter restriction caused by ash accumulation (bank 2), P2453 - Diesel particulate filter differential pressure sensor circuit range/performance, P252F Oil level too high, poor fuel economy, running rough
