Si B12 14 12

Bulletin number

121412

Component

Engine

Summary

SI B12 14 12 October 2014 Engine Electrical Systems Technical Service This Service Information bulletin supersedes SI B12 14 12 dated February 2014. designates changes to this revision SUBJECT N51, N52K, N52T and N55 Engine: Various Faults Stored in DME Related to VANOS and Camshaft Position. A rattling noise can be heard from the engine compartment; the engine loses power; and the Service Engine Soon lamp is illuminated. One or more of the following faults may be stored: E70, E71, E82, E88, E90, E91, E92 and E93: 2A7C - VANOS, inlet, cold start 2A82 - VANOS, intake, variable cam control test 2A7A - VANOS, exhaust, cold start 2A87 - VANOS, intake: control fault, camshaft sticking 2D5A - VANOS, intake: control fault, camshaft sticking 2D5B - VANOS, intake: control fault, position not reached 2D54 - VANOS, exhaust, cold start: not controllable 2D55 - VANOS, intake, cold start: not controllable 2D60 - VANOS, exhaust: control fault, camshaft sticking 2D61 - VANOS, exhaust: control fault, position not reached 2D9F - Camshaft input sensor: signal implausible 2DA1 - Camshaft exhaust sensor: signal implausible 300C - Camshaft input sensor: signal high 300D - Camshaft input sensor: signal low 300E - Camshaft exhaust sensor: signal high 300F - Camshaft exhaust sensor: signal low F07, F10, F12, F13 and F25: 130104 - VANOS, intake: control fault, camshaft sticking 130108 - VANOS, intake: control fault, position not reached 130304 - VANOS, exhaust: control fault, camshaft sticking 130308 - VANOS, exhaust: control fault, position not reached 130E11 - Camshaft input sensor: signal implausible 130F11 - Camshaft exhaust sensor: signal implausible 164020 - Camshaft input sensor: signal high 164021 - Camshaft input sensor: signal low 164030 - Camshaft exhaust sensor: signal high 164031 - Camshaft exhaust sensor: signal low CAUSE One or both (intake and/or exhaust) of the VANOS gear assemblies may have faulty assembly bolts. One or more of the four assembly bolts have loosened or broke

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