2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 267
Condition for fault memory entry
Yes, by event counter. If knock sensor signal remains below
threshold (differential knock signal > 4.8 V) for 1...3 sec.
fault code is stored
Action in service
1. Check knock sensor connection to verify that it is tight.
2. Check wire connecting knock sensor 1 and enginemanagement
control module
3. Check for connection between knock sensor 1 and ground
or positive
4. Replace knock sensor
Fault effect and breakdown warning
Driver information
Warning light:
No warning message. (No closed-loop knock control
available. Power loss, as engine reverts to operation in safe
range.)
Service instruction
none
2E69 - P1327 (DME)
2E69 - P1327
Information saved in
DME
Fault code
2E69 - P1327
Fault text
Knock-sensor signal 2
Fault description
Knock Sensor 2 Circuit Low Input (Bank 1)
Condition for fault identification
Test condition:
Knock sensor signal monitor
Vehicle road operation at >2800 1 rpm (current data status,
tends toward >2560 rpm) and air mass > 180 mg/unit. It is
not possible to clear fault by switching ignition terminals.
Compliance with the activation conditions and absence of
malfunction extending over several seconds are required
before fault code can be cleard.
Terminal condition: Terminal 15, engine on
Voltage condition:
Voltage in onboard electrical system > 10 V
Condition for fault memory entry
Yes, by event counter. Knock signal sensor must lie below
threshold (differential knock signal < 180mV <200mV) for
1...3 sec., then fault code is registered
Action in service
1. Check knock sensor connection to verify that it is tight.
2. Check wire connecting knock sensor 1 and enginemanagement
control module
3. Check for connection between knock sensor 1 and ground
or positive
4. Replace knock sensor
Fault effect and breakdown warning
