SPN 83 — Short to battery positive (Renault Trucks and ZF AS-Tronic)

Safe to driveDrivable, but watch it yourself

SPN 83 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by Renault Trucks and ZF AS-Tronic, and what the second half of the code (FMI) means.

Renault Trucks

FMI 6

Short to battery positive. Repair: Check the wiring between the control unit and the clutch actuator (X1B/7, X1B/16). Run the diagnostic check of the clutch actuator. Switch the ignition off, switch it on again and repeat the test. If the fault persists, replace the control unit.

ZF AS-Tronic

ZF AS-Tronic uses its own fault numbering: the number in the table below is an internal ZF code, not a J1939 SPN. It matches the title of this page by digit only and means something different.

FMI 6

Short circuit to positive supply on valve Y15 output (clutch slow engagement).

What FMI means in J1939

SPN 83 FMI 683/6 · 83.6

current above normal or grounded circuit

Can I keep driving

Safe to drive. Below — how much time you have and what happens if you keep going.

What happens if you keep driving

Time you have: Drivable, but watch it yourself

This is an electrical fault: an open, a short or a bad contact in the sensor circuit. The value it measures is most likely fine.

You can drive. But until the circuit is repaired this system runs blind and cannot warn you about a real failure.

Nearby: other

• SPN 72Engine Supercharger Bypass Valve Position
• SPN 73Auxiliary Pump Pressure
• SPN 76Axle Lift Air Pressure
• SPN 77Rear Tandem Front Drive Axle Temperature
• SPN 78Rear Tandem Rear Drive Axle Temperature
• SPN 84Wheel-Based Vehicle Speed
• SPN 85Short to battery positive
• SPN 86Cruise Control Set Speed
• SPN 91Accelerator pedal position
• SPN 92Engine Percent Load At Current Speed

Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.