2A99 - P1553

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2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction



none









2A99



2A99 - P1553







Information saved in



DME









Fault code



2A99 - P1553









Fault text



Crankshaft - exhaust camshaft, correlation









Fault description



Engine Position System 'B' Performance (Bank 1)









Condition for fault identification



Test condition:





NWA synchronized, adaptation enabled Terminal condition: Terminal 15 on Voltage condition:





none









Condition for fault memory entry



On each camshaft tooth flank when the position is out of tolerance.









Action in service



Check position (valve timing setting) of camshaft and reluctor



Check timing chain and tensioner mechanism.



Check VANOS solenoid for dirt and contamiantion



Check torque on crankshaft center bolt







Fault effect and breakdown warning







Driver information Warning light: MIL 2nd DC,



CAM operates in emergency default mode

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