2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 72
Condition for fault memory entry
On every camshaft flank when the flank was outside
tolerance. At engine start only.
Action in service
1. Check signal wire for short to positive, ground, open wire.
2. Replace camshaft sensor.
3. Check positions (valve timing setting) of camshaft
reluctors
4. Check timing chain and chain tensioner assembly.
5. Check VANOS solenoids for dirt and contamination
Fault effect and breakdown warning
Driver information
Warning light:
Nothing, as double fault is present
Service instruction
none
2A9E
2A9E - P0344
Information saved in
DME
Fault code
2A9E - P0344
Fault text
Camshaft sensor, inlet, synchronization
Fault description
Camshaft Position Sensor 'A' Circuit Intermittent (Bank 1 or
Single Sensor)
Condition for fault identification
Test condition:
NWE synchronous
Terminal condition: Terminal 15 on
Voltage condition:
none
Condition for fault memory entry
On every camshaft flank if the flank ratio was not in
tolerance.
Action in service
1. Replace camshaft reluctor, installation fault
2. Signal interference
3. Replace intake camshaft sensor, transmitting inverted
signal
Fault effect and breakdown warning
Driver information
Warning light:
MIL 2nd DC,
CAM operates in emergency default mode
