Tuesday, June 30, 2020

2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts

2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts

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P1056

2A3F – P1056

Information saved in

DME

Fault code

2A3F – P1056

Fault text

Valvetronic, actuator motor: power supply

Fault description

VVT-Supply Voltage Control Motor Low Input (Bank 1)

Condition for fault identification

Test condition:

202

VVT servo motor power supply monitor

Terminal condition: Terminal 15 ON

Voltage condition:

Electrical system voltage terminal 87 >10.0 V

Condition for fault memory entry

Power supply voltage < 5.75V

Action in service

1. Check VVT power supply voltage with multimeter.

Supply voltage must lie between 5.75V and 17V.

2. If result is outside specified range: Inspect the powersupply

wire to the VVT pins and check the plug.

3. If contact is stretched or corroded: Replace plug 4. If

wiring harness is defective: Replace wiring harness.

Fault effect and breakdown warning