00625 – Speed Signal (VAG Golf IV/V, Passat B5/B6, Polo, Audi A3, A4, A6, Octavia, Fabia, Leon)
On VAG vehicles, fault code 00625 means "Speed Signal". It is common on Golf IV/V, Passat B5/B6, Polo, Audi A3, A4, A6, Octavia, Fabia, Leon, Stored in cluster, ABS, airbag, radio or engine modules engines. Below are the real-world causes, step-by-step tests and OEM part numbers.
Last updated
00625 quick summary
| Fault code | 00625 |
|---|---|
| Meaning | Speed Signal |
| System | Chassis |
| Vehicles | VAG (VW, Audi, Škoda, Seat) |
| Common on | Golf IV/V, Passat B5/B6, Polo, Audi A3, A4, A6, Octavia, Fabia, Leon, Stored in cluster, ABS, airbag, radio or engine modules |
| Severity | Medium |
| Can I drive? | Yes, carefully. The speedometer, cruise control or ABS may not work correctly – keep an eye on your speed. |
| Repair cost | €0 – €400 |
Symptoms of 00625
- Speedometer not working or jumping
- Cruise control not working
- ABS / ESP lights on
- Radio volume does not adjust with speed (GALA)
- Code stored in several modules
Most common causes of 00625 (most likely first)
Mechanic's Pro Tip
On most VAG cars the speed signal comes from the ABS module, which calculates it from the wheel speed sensors and passes it to the cluster and other modules. Read the ABS module first: a failed wheel speed sensor or an ABS module fault is the usual cause. On older cars with a gearbox speed sensor (G22), check that sensor and its connector.
1.Faulty wheel speed sensor or ABS module
Most likely2.Faulty gearbox speed sensor G22 (older models)
3.Wiring or connector fault in the speed signal circuit
4.Instrument cluster fault
5.Wrong coding of a module after replacement
Step-by-step diagnostic guide
- 1
Read all modules and check which ones store 00625.
- 2
Read the ABS module (03) and compare the four wheel speeds in the measuring blocks.
- 3
On older models check the G22 sensor and the speed signal wire to the cluster.
- 4
Check coding of recently replaced modules.
- 5
Repair the sensor, wiring or module, clear codes and test drive.
Frequently asked questions
Why is 00625 stored in the radio?
The radio uses the speed signal to raise the volume as you drive faster. When the signal is missing, it stores the code too.
Does 00625 mean the speedometer is broken?
Usually not – the signal from the ABS or speed sensor is missing. The cluster itself is a less common cause.
Related fault codes
This guide is for information only. Working on vehicles can be dangerous — if you are unsure, have the car checked by a qualified mechanic. Values can differ between model years; always check the manufacturer's repair information.