Scania fault code 7971
Code 7971 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:
EBS Electronic Braking System
Left ABS control valve, inlet
Impermissible result in one of the system's operational checks.
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EMS Engine Management System
The heater for the wide-band lambda probe, break in circuit
The control unit indicates that the lambda sensor has a break in the circuit.
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