2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 39
Condition for fault identification
Test condition:
NWA synchronous
Terminal condition: Terminal 15 on
Voltage condition:
none
Condition for fault memory entry
On every camshaft flank if the flank ratio is not in tolerance.
Action in service
1. Check signal wire for short to positive, ground, opens and
interference pulses
2. Replace camshaft exhaust side sensor,
Fault effect and breakdown warning
Driver information
Warning light:
MIL 2nd DC,
CAM operates in emergency default mode
Service instruction
none
2AA4
2AA4 - P0016
Information saved in
DME
Fault code
2AA4 - P0016
Fault text
Camshaft sensor, inlet, tooth fault
Fault description
Crankshaft Position - Camshaft Position Correlation (Bank 1
Sensor A)
Condition for fault identification
Test condition:
NWE synchronous, 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. Immediate entry without debounce
Action in service
1. Check position (valve timing setting) of camshaft and
reluctor
2. Check torque on crankshaft center bolt
Fault effect and breakdown warning
Driver information
Warning light:
MIL 2nd DC,
CAM operates in emergency default mode
