2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 110
Crankshaft sensor, gap fault
Fault description
Timing Reference High Resolution Signal 'A'
Condition for fault identification
Test condition:
Engine turns over, camshaft synchronized
Terminal condition: Terminal 15 on
Voltage condition:
none
Condition for fault memory entry
On each tooth if the tooth time was outside the expected
window. Assessment at each synchro gap
Action in service
1. Check signal wire for short to positive, ground, opens and
interference signals
2. Replace crankshaft sensor
Fault effect and breakdown warning
Driver information
Warning light:
MIL 2nd DC
CRK emergency default mode
Service instruction
none
2A98
2A98 - P1554
Information saved in
DME
Fault code
2A98 - P1554
Fault text
Crankshaft - inlet camshaft, correlation
Fault description
Engine Position System 'A' Performance (Bank 1)
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.
Action in service
1. Check position (valve timing setting) of camshaft and
reluctor
2. Check timing chain and tensioner mechanism.
3. Check VANOS solenoid for dirt and contamiantion
4. Check torque on crankshaft center bolt
Fault effect and breakdown warning
