Golf 4 2003 - ESP Light Stays On, Errors 1542 (G202 Sensor) & 493

I searched everywhere and couldn`t find a topic like this anywhere, and if there was a topic, no one answered.


The problem is that from one day to the next, the ESP light came on. Sometimes it does not go off at all for a whole week, and sometimes it goes off, but after driving away it comes on, VAG briefly connects to the ABS and error 1542, car rotation sensor G 202, appears. short circuit to another output, sporadic error and second error 493, unknown error code, damage. After deleting the errors, the light sometimes goes out and the error 493 still appears and after a few minutes the light comes on and when it lights up, there is still only this one error. The next day it shows again these 2 errors and after deleting the light does not go off and with one error 493 it is the same as before. I did not connect the computer for a few days, the light was on all the time and in the evening it did not light and after turning on the ESP also responded to the switch normally, it turned on and off when the steering wheel was turned back and forth it didn`t light up either, when I pressed the brake it didn`t light up either, but as soon as I moved a little from a standstill it immediately came on. And today it was on all the time once, and once it stopped and after some time the car started, it didn`t light up. and as soon as it moves, it lights up. ABS works normally. The only problem is with this one light. Maybe someone has already had such a problem and solved it themselves, or someone else who can help, please answer.

one of the abs sensors is giving me crap. The sensor should be around 1300 Ohms. Go to the values and see if they all give the same speed

I thought so too, but it`s strange that the ABS works and does not show ABS sensor errors

Possibly a lateral acceleration sensor. A topic as old as golf.
There is a small cube under the steering wheel.

The Golf is old, but it also needs to be repaired, just like the topic, but no one has given a detailed answer so far after all these years and the defect still happens. the sensor is under the steering wheel, number 1J0 907 655 A. but I didn`t notice anything disturbing in this sensor. If you buy a second one, it is not certain that you will buy a good one. A few people sell it and write that for them this sensor did not solve the cause, another fault, and the costs there are no opportunities due to lack of time. I can`t do a name change because no one has any friends.

Check the harness first. X-ray and measure for short circuits. And install a new sensor, it will be safe.

It can be regenerated

You just need to open it
I dissolve it.

I know that a new one will be reliable, but the cost is high and there is no certainty that it is because when the error 1542 is cleared, this error appears immediately and the indicator light is on. And where does this installation most often break down?
There is no problem with opening this sensor because it has 4 screws and can be unscrewed, in older models there was one that soldered the system, and in this one I didn`t notice anything disturbing under the magnifying glass.

WjacekW1 wrote:

when error 1542 is cleared, this error appears immediately and the indicator lights up.

It`s simple, ESP in teaching mode after deleting errors with the steering angle sensor or lateral/longitudinal acceleration sensor, after starting driving, waits for a signal from the sensors to start working properly, but it does not receive this signal and only then reports a sensor error...

You are betting that the ABS sensor is faulty. But after deleting these errors and re-reading, there is still error 493 without moving from the place. and as far as possible forward and backward, this error remains, only after a long drive it shows the second error 1542. And what do you think, can I find out more about VCDS because I`m thinking about buying it.

No, you write that the ABS works, you have a problem with the ESP sensors, most likely the one under the steering wheel, or possibly its wiring.

This is how ABS works on slippery surfaces, it was tested. So you say that 99% of the time it is the fault of the sensor I gave the number above.

Damn, you`ve got it on a plate, what else are you looking for?

Because it`s better to ask a few people than to spend money unnecessarily.

Today a strange thing happened, like never before, in the middle of a roundabout the Golf went out and it started jerking as if the timing belt had broken and when I tried to start it with the ignition for the first time it jerked in the same way. Only when I stopped it started normally, the ESP light went off, I drove a few meters and it started jerking like this as if the front wheels braked on their own alternately and the ESP light came on and everything returned as before. At the beginning, VAG did not want to connect to the ABS, but after one attempt it connected as before and showed the same errors 2 as in the topic. In the engine, zero errors. Or maybe it`s the fault of the ABS ESP pump, or rather the pump controller.

Something wrong with the cables.

Added after 1 [second]:

Something wrong with the cables.

domex32 wrote:

Something wrong with the cables.

Added after 1 [second]:

Something wrong with the cables.

G202 damaged.

PAWCIA30 wrote:

However, I would check the geometry, because the turning and casting sensors go crazy when the settings are incorrect

WjacekW1 wrote:

The problem is that the ESP light came on overnight

The geometry does not change from day to day.

Geometry definitely not, because no one rides on curbs, the tires wear out evenly, and a few kilometers are gained per week. I will try to buy and change this G 202 sensor.. If it weren`t for TUV this month, nothing would be looked for quickly, it would be calm one day You would have searched and the defect would have been discovered, but you need the car every day and there is no time for searching.

Added after 6 [minutes]:

Maybe tomorrow I will check the cables behind the radio, because maybe the ones coming from the radio are coming from the switch, they have overheated and are short-circuiting. And they are probably somewhere behind the radio, am I right or not.

Added after 28 [minutes]:

Or maybe someone has an ESP installation diagram they can share.

It`s a strange thing. On Saturday, I disassembled the installation and when moving the cables, sometimes it showed an error and sometimes there was no error, the light did not light up even when driving. the installation looks undamaged, there are no abrasions, no welded wires, and when I moved the cables, the error disappeared no matter where I moved, at g 202 or at the fuses. Sometimes it disappeared and reappeared, sometimes it did not disappear at all or it did not appear at all. Specifically it was impossible to determine the location. Today I changed 1J0 907 655 A, i.e. g 202 and everything works correctly. The test drive was done and there were no errors, we`ll see if it stays that way.