This is a illustration that show you how to solve JCB Tier4 engine mbient pressure sensor voltage above normal or open circuit SPN 108,FMI 3.
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Description
The EEM4 monitoring system has detected a failure at the ECU internal pressure sensor. A possible reason for this is an ECU hardware defect.
Reaction in EEM
The FC is stored and the warning lamp is activated. The CAN message indicates active fault.
Solution
First save the error log and then erase it. Restart the ECU after erasing the error log. If the fault occurs again during the next driving cycle, check the following paths:
Check the ECU operation with another ECU. If the system is functional and the fault is not active with the replacement ECU, then the original ECU is defective.
More repair case for JCB,please refer to:JCB Trouble Repair
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