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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 Alternator not charging, Battery going flat, Charge light illuminated, engine light on, loss of power, P1264 VN Turbo controller malfunction, P2563 Turbocharger/ supercharger boost control position sensor ‘A’ Circuit Range/ Performance, P2564A Turbocharger/supercharger boost control position circuit ‘A’ low, P2588B Turbocharger/supercharger boost control position circuit ‘B’ low
