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P0021 Diagnostic Trouble Code Discussion for June 2007

Camshaft Position 'A' Timing Over-Advanced / System Performance (Bank 2)

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Trouble Ticket Help Requests for DTC P0021
Help Request Posted
1999 BMW 540i 4.4L MIL Lamp on VIN: WBADN5333X
P0021: A Camshaft Position - Timing Over-Advanced or System Performance Bank 2. All BMW techs, please help !!! I have this BMW here that is driving me nuts. Bought car from customer after timing chain skipped and bent all 32 valves. Replaced bank 2(drivers side) cylinder head with low mileage head from salvage yard, which a valve job was ...
June 10, 2007
2000 BMW 540i 4.4L hard start VIN: WBADN6642Y
P0021: a camshaft pos.- timing over advance bank 2. this car came in for a hard start problem. when the car was started i heard timing chain noise and when i hooked it to the scanner it gave me 2 codes for either side camshaft overadvance. pulled the valve covers off and noticed loosed upper cam tensioner. can ...
June 19, 2007