Here is a instruction show you guide on how to solve Liebherr ECU 2 D966 D9512 engine fault code P1162 module sensor communication error.
Reason:
Faulty sensor(s) (mechanical and electrical components, power supply, set value, measuring range)
Related Contents:
2026 LIEBHERR LiDIA Diagnostic Software
Liebherr Diagnostic Tool with 9 Pin Cable
Troubleshooting
Check wiring for proper connection and contact as well as for damage (terminal connections, connectors, module connections)
Check voltage supply for sensor
Information for engines with serial number UP TO 2018 xx xxxx (12/31/2018):
In the event of failures of NH3 sensors (ID no. 10144038) on the exhaust treatment system of Stage IV engines, the NH3 control unit (ID no. 10144039) must also be replaced ONCE to improve the service life of the NH3 sensor.
The sensor will come with an extended heat shrink tubing for improved protection of the trim resistance.This spare parts information applies for engines with a serial number up to 2018 xx xxxx (12/31/2018) : all engines with a year of manufacture starting from 2019 are already equipped with the latest version.
• In the event of a sensor failure, the sensor control unit must be replaced ONCE with a new sensor control unit.
• No active conversion is carried out. Replacement only in the event of failure.
• A repair kit with the ID 13489562 is available, it includes the sensor and sensor control unit.
Consequence:
Possible failure SCR system
Component Location
EATS All versions
D956-D966 A7-04 (SCRonly)
D956-D966 A7-05 StageV (SCRFilter)
EATS All versions
D9512 A7 04-05-StageV
Primary (A700)
Secondary (A760)
More repair case for Liebherr machine,please refer to Liebherr trouble repair