What this code means
Code 83, GNSS is missing, appears when the tachograph's GNSS receiver has not received any position data for three hours of cumulative driving time. The receiver itself is not reported as faulty — it simply isn't getting a signal.
According to the manual, the severity of this fault is Medium. On a Stoneridge SE5000, the same fault is logged in the workshop diagnostic tool as DTC 002C80.
Code 83 means the signal is missing — the receiver is working but isn't getting a position fix. Internal GNSS fault (code 82) means the receiver or its antenna is itself faulty. The fix is different for each.
What to do now
The manual gives one instruction for code 83:
- Acknowledge the message on the tachograph display.
If your unit is a Stoneridge SE5000 (DTC 002C80): check the GNSS reception and look for anything obstructing the signal — a dirty, damaged or shielded antenna, or the vehicle parked somewhere the antenna can't see the sky, are the usual causes.
Your tachograph logs this fault — TAGRA reads it
TAGRA doesn't restore a lost GNSS signal — that depends on the antenna and where the vehicle is parked. But once code 83 is written to the tachograph's memory and to your driver card, TAGRA finds it in your downloaded data, evaluates it and documents it — exactly what you need at a roadside check, and when you raise a query with the workshop.
Stop looking up codes by hand — try TAGRA TRUCKER free for 30 daysWhy it happens
Code 83 is triggered purely by the absence of a position fix — after three hours of cumulative driving with no GNSS data, the tachograph raises the message. On a Stoneridge SE5000 (DTC 002C80), the recommended checks are the GNSS reception itself and anything that might be obstructing the signal.
This is distinct from code 82: with code 83, nothing is reported as broken inside the unit — the receiver simply has no signal to work with.
Can you keep driving?
The manual classifies code 83 as Medium severity, and the only instruction given is to acknowledge the message — there is no requirement to stop.
If you drive a Stoneridge SE5000, check the GNSS reception and look for obstructions to the antenna once you have the chance. If the message keeps recurring on the same vehicle, that points to a persistent antenna or positioning problem worth raising with your workshop.
Also displayed as
Drivers across Europe see the same fault under different on-screen wording. These are the real search terms used for code 83:
- GNSS ontbreekt 83 — Dutch
- Brak GNSS 83 — Polish
- Lipsă GNSS 83 — Romanian
Related codes
Frequently asked questions
What triggers "GNSS is missing" (code 83)?
The tachograph has had no GNSS position data for three hours of cumulative driving time. The receiver itself is not reported as faulty — it simply hasn't received a signal.
What is the difference between code 83 and code 82?
Code 83 means the signal is missing — the receiver is working but isn't getting a position fix. Code 82, internal GNSS fault, means the receiver or its antenna is itself faulty.
Can I keep driving with code 83?
Yes. The manual classifies it as Medium severity and asks only that you acknowledge the message. There is no requirement to stop.
What does DTC 002C80 mean on a Stoneridge SE5000?
DTC 002C80 is the Stoneridge SE5000 workshop code for a missing GNSS signal. The recommended checks are the GNSS reception itself and anything that might be obstructing the antenna's view of the sky.