Volkswagen ABS Pump Repair, Polo to Amarok and Transporter
Summary: We repair Volkswagen ABS pumps and modules by post, from the Polo to the Amarok and the Transporter. The fault we see most on them is the brake pressure sensor inside the unit, logged as 01435 with the ESP lamp lit. Yours comes back as a lasting fix, ready to refit with no programming and covered by a lifetime warranty.
Every other make we repair sits under our ABS pumps and ECUs hub.
What a Volkswagen’s warning lamps point to
| What the car shows | Where the fault usually sits | What happens next |
|---|
| ESP lamp on; ESP OFF button lit and ignoring presses | The brake pressure sensor inside the ABS unit | Unit repair |
| ABS, ESP and traction lamps together | The ABS module, which runs all three | Read its codes; an internal fault means a unit repair |
| ABS lamp on, speedometer dead | The module, which passes road speed to the instrument cluster | Unit repair once the wiring is cleared |
| No reply from the ABS module on a scan | The module, or its power supply | Battery, earths and connector first, then the unit |
| One ABS lamp, one wheel-speed code | Usually the sensor or its wiring | Test the sensor before removing anything |
With any of these lamps lit, a Volkswagen normally still stops when you press the pedal. What drops out is the anti-lock and stability help that keeps it straight in a hard stop, so have it looked at promptly instead of learning to ignore the lamp. Our guide to how an ABS pump works explains each part.
VW ABS fault codes and the unit behind each
Tools word these differently; read the table for the shape of the fault.
| Code | What it records | What it says about the unit |
|---|
| 01435 | Brake pressure sensor 1: implausible signal | Points at the sensor inside the unit |
| 01420, 01418 | Driving dynamics (ESP) switch valve 1: intermittent | A valve circuit in the hydraulic unit, recorded on Bosch 8.0 |
| P1649 | Data bus: implausible signal from the ABS control module | Also seen on Audi; points at the module’s communication |
| U0121 | Lost communication with the ABS module, on generic readers | Confirms the module is offline, not why |
A module that will not answer can be the unit or the wiring feeding it. Our ABS module no-communication guide sets out what to check first.
The pressure sensor fault behind 01435
On the ATE MK60 and MK70 units found across the Golf, Touran, Caddy, Jetta and Eos, the brake pressure sensor is built into the ABS unit instead of sitting on the brake system beside it. It sees full braking pressure on every stop, and it is the part that gives out.
It is one of the Touran’s best-known failures, covered on our Touran ESP fault page; our brake pressure sensor fault page follows it across VW-group cars.
A new unit is built the same way and carries the same weak point. Our repair is a lasting fix for it, which is why it comes with a lifetime warranty.
Volkswagen has used Bosch, ATE and TRW units, sometimes several on one model, so the label on the unit is what tells them apart.
- Bosch 5.3 — the 1996–2001 Passat
- Bosch 5.7 — Passat and Polo
- Bosch 8.0 — Polo and Crafter
- Bosch 9 — the Polo Mk5
- ATE MK25 — the 2003–2009 Transporter
- ATE MK60 and MK70 — Golf, Touran, Caddy, Jetta and Eos
- TRW — some 2006–2007 Passat variants
Bosch labels carry a number starting 0265 or 0273, and ATE labels one starting 10. The Volkswagen number is on the unit’s sticker too; on the Touran’s MK60 it begins 1K0 614 517.
Volkswagen ABS Pumps We List
The VW ABS units currently on the site, from the Polo up to the Amarok and the Transporter vans. Two Transporter listings overlap on years, so check the part number on your unit against the listing before you send it in. Not listed? Use the repair form and include that number.
To get started, send us your unit through our repair form, or contact us if you are not sure which part has failed.
Repaired, exchanged, new or used: how the options compare
Three things decide how a Volkswagen ABS refit goes: coding, the part number, and the pressure sensor weak point.
| Option | At refit | Part number | ATE pressure sensor weak point |
|---|
| Your own unit, repaired | Plug and play, no programming | Already the right one | Repaired as a lasting fix |
| Replacement from our stock | Set up so no programming is needed | Matched to yours before dispatch | Already repaired |
| New unit | Typically has to be coded to the car | Must match the original | Same design as the one that failed |
| Second-hand unit | Typically has to be coded to the car | Must match exactly | Same design, unknown history |
Whoever takes the unit off, you or your garage, posts it to us with the part number and any codes; we test it against the reported fault before any work starts. Removing any ABS unit opens the brake hydraulics, so the brakes and the unit are bled at refit, whichever option you take. Fitting services are available if you need them.
What VW owners ask about ABS repair
What does a lit ESP lamp change about how my Volkswagen brakes?
The ordinary brakes normally keep working, so the car still stops. The anti-lock and stability assistance is switched off until the fault is fixed, so have it checked promptly.
Does 01435 always mean the ABS unit has failed?
Not always, but on VWs with the ATE MK60 or MK70 unit it points at the pressure sensor built into it. Send the full code list and part number and we will confirm.
What has to be done to the car when the repaired unit goes back on?
No programming. The brakes and the unit are bled and the stored codes cleared, as with any ABS unit; our fitting service can do it.
The list stops at six models. Can you repair my Golf, Touran or Passat unit?
Yes. The list shows the units we sell; our repair covers Bosch, ATE and TRW units across the range. Put the part number on the repair form.
Sinspeed · Volkswagen ABS, Polo to Transporter
A lasting fix for your Volkswagen’s ABS unit
Include the part number from the unit’s sticker and any codes a scan has turned up.
UK automotive-electronics remanufacturer · R&D that keeps pace with newer VW systems · Replacement units held in stock
