DTC P1381 BMW
Control Module Self-Test, Knock Control Offset (Bank 1)
Control Module Self-Test, Knock Control Offset (Bank 1)
Description
Engine started, vehicle driven at 1520rpm for 10 seconds or to a temperature of 40 degrees Celsius, and the DME detected the Knock chip is defective.
Cause and Solution
Knock sensor circuit is open
Knock sensor is loose (tighten to 20 NM)
Contact between the knock sensor and cylinder block is dirty, corroded or greasy
Knock sensor circuit is shorted to ground, or shorted to power
Video Guide
Diagnostic Info
- DTC Code: P1381
- Brand: BMW