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VW POLO 2016 1.2TSI: Post-Accident Power Steering Issues, Error P160900, Steering Angle Sensor

ptr92 38697 15
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  • #1 16726401
    ptr92
    Level 19  
    Posts: 559
    Help: 27
    Rate: 247
    Hello,

    has a support problem after the VW Polo accident in 2016.06. 1.2TSI. I got rid of the error P160900 - It turned off due to an accident, I put away the car for the night and the support came back. I have set the limit switches, but the problem is that the power indicator lights up red all the time, even though the steering wheel rotates slightly.
    Errors in ABS: U042800 - Steering angle sensor - invalid signal, and C114602 - Counter display. Pressure. in tires - signal error
    Error in assistance: C116854 - Steering angle sensor - basic setting not executed / incorrect

    In ABS, the steering angle sensor does not change and indicates a total of 3276 degrees. By doing the VCP setting point zero, nothing changes. KTS, on the other hand, when trying to set the zero, throws out that the value from the steering angle sensor is outside the tolerance range.
    In assisting, however, the value of the steering angle changes, and the steering wheel position in the middle shows -36 degrees. The convergence is set correctly. The steering wheel rotates the same angle to the left and right.

    Did someone have such a problem?
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  • #2 16729612
    panstalin2
    Level 20  
    Posts: 435
    Help: 30
    Rate: 213
    The power steering pump must have the same number.
  • #3 16730618
    szymitsu21
    VIP Meritorious for electroda.pl
    Posts: 3702
    Help: 342
    Rate: 1289
    After an accident, probably a poorly assembled column.
  • #4 16732224
    ireneusz1981
    Level 19  
    Posts: 202
    Help: 26
    Rate: 81
    whether other support was provided after the accident or improved damaged. I understand that mistakes were made after an accident as a result of harming the support mechanically? Was something repaired repaired, too little info what was being repaired to find out where the fault is?
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  • #5 16734339
    ptr92
    Level 19  
    Posts: 559
    Help: 27
    Rate: 247
    The pump is old, the mangle has not been repaired, the steering column was unscrewed, but not removed. I know this info from the client.
    For now, the car returned to where it was repaired after the accident and they are to check whether it is ok in mechanical terms.
    In these cars, the error crashing in support probably appears after the information about the accident from the pillow driver.
  • #6 16794227
    ptr92
    Level 19  
    Posts: 559
    Help: 27
    Rate: 247
    I will dig out the topic. The column was changed and nothing has changed. Finally, the original from this car was inserted. I managed to finally have a steering angle sensor with straight wheels - / + 2 steps in the power steering. The terminals were assigned, but I still can not get rid of the error regarding the basic setting of the steering angle sensor. So the steering and traction controls are still on. I drove a little car and nothing. ABS does not see the steering angle.
    Do you have any more tips?
  • #7 16797789
    jacek074
    Level 30  
    Posts: 878
    Help: 186
    Rate: 717
    The steering angle sensor (under the steering wheel) has been checked? As the car has halogens, it is possible to see if the turn lighting is working, the 90 ° turn should ignite the halogen.
  • #8 16800917
    ptr92
    Level 19  
    Posts: 559
    Help: 27
    Rate: 247
    The steering angle sensor works. Here, there is no angle sensor in the steering column module. The sensor according to me is integrated in the whole column.
    As proof that the sensor is working, the fact is that you have attributed the tap.
    The problem is that there is an error in supporting the basic setting, and ABS does not see this sensor.
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  • #9 16803990
    ireneusz1981
    Level 19  
    Posts: 202
    Help: 26
    Rate: 81
    if the error of the basic setting may be you should change the coding to the appropriate one.
  • #10 16804003
    ptr92
    Level 19  
    Posts: 559
    Help: 27
    Rate: 247
    no driver has been replaced in the car. The column was replaced only during the repair.
  • #11 16804090
    ireneusz1981
    Level 19  
    Posts: 202
    Help: 26
    Rate: 81
    give error numbers from the drivers preferably from vcds. He concludes that there are some errors after replacing the mechanical part of the power steering system. Maybe you should do the correct adaptation in ABS and stering assist. How can you give error numbers.
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  • #12 16806050
    ptr92
    Level 19  
    Posts: 559
    Help: 27
    Rate: 247
    in assistance: 1094656 (B116854) Steering angle sensor None
    in ABS: 1141 (U042800) Steering angle sensor Unbelievable signal
    1149 (U042800) Steering angle sensor Unbelievable signal
  • #13 16806649
    jacek074
    Level 30  
    Posts: 878
    Help: 186
    Rate: 717
    Fact in this year's electric power assisted column and sensors installed in the support. Finally, the diagnosis is retracted. There was a problem with the voltage drop in these aids, or you can try to adapt with the connected charger.
  • #14 16808361
    zyganps
    Level 10  
    Posts: 6
    Rate: 8
    compare the speed of the wheels when driving straight ahead, the sensor adapts while driving and compares these values, as it agrees, it ends successfully zeroing
  • #15 17227699
    grzeniu_26
    Level 1  
    Posts: 1
    Rate: 8
    Did you agree with this problem?
    I have a similar case.
  • #16 17973496
    Paull.pp
    Level 1  
    Posts: 1
    Rate: 3
    grzeniu_26 wrote:
    Did you agree with this problem?
    I have a similar case.


    I also had this case, it is so in all new Ibiza and Polo. I had to do it online on the site.

    Added after 31 [seconds]:

    grzeniu_26 wrote:
    Did you agree with this problem?
    I have a similar case.


    I also had this case, it is so in all new Ibiza and Polo. I had to do it online on the site.

Topic summary

✨ The discussion revolves around power steering issues in a 2016 VW Polo 1.2TSI following an accident. The user reports persistent error codes, including P160900, U042800, and C116854, indicating problems with the steering angle sensor and ABS system. Various responses suggest potential causes such as a poorly assembled steering column, issues with the power steering pump, and the need for proper coding and adaptation of the steering angle sensor. The user has replaced the steering column but continues to experience errors, particularly with the ABS not recognizing the steering angle sensor. Suggestions include checking the sensor's functionality, ensuring correct adaptation in the ABS and steering assist systems, and verifying voltage levels in the power steering system.
Generated by the language model.

FAQ

TL;DR: 3276° ABS reading and "the steering wheel position in the middle shows -36 degrees" point to a failed basic setting after crash; fix involves correct adaptation, stable voltage, and sometimes dealer online calibration. This FAQ helps VW Polo/Ibiza owners and techs resolve EPS/SAS faults. [Elektroda, ptr92, post #16726401]

Why it matters: Power steering and stability control stay disabled until the steering angle sensor (SAS) is learned correctly.

Quick Facts

What does error P160900 mean after an accident on a VW Polo 2016 1.2 TSI?

P160900 indicates the electric power steering switched off due to a crash event stored by the airbag controller. Clearing and reinitializing can temporarily restore assist, but unresolved SAS/ABS faults keep warnings lit. Ensure the SAS basic setting completes to clear the EPS light. [Elektroda, ptr92, post #16726401]

Why is my red steering warning on even though the wheel turns normally?

The EPS module can show assist while the warning remains if the SAS basic setting failed. In one case, the wheel centered at −36° and the ABS saw a fixed angle, so the light stayed on. Complete SAS adaptation to synchronize EPS and ABS. [Elektroda, ptr92, post #16726401]

How do I fix U042800 “steering angle sensor invalid signal” in ABS?

Drive straight and perform SAS adaptation so ABS can validate the angle against equal left/right wheel speeds. If speeds align, the module finalizes zeroing and clears the invalid-signal fault. Keep the road and tires consistent during the learn drive. [Elektroda, zyganps, post #16808361]

What does C116854/B116854 “basic setting not executed/incorrect” mean?

The EPS module did not complete the SAS basic setting. Until it succeeds, stability control and steering warnings remain active. Perform the adaptation with correct preconditions and verify no conflicting ABS faults persist before retrying. [Elektroda, ptr92, post #16806050]

Where is the steering angle sensor on a 2016 Polo (6C)?

For this model year, the SAS is integrated into the electric steering column assembly. It is not a separate sensor under the steering wheel module. Replacement or coding must match the column’s integrated electronics. [Elektroda, ptr92, post #16800917]

ABS shows a constant 3276° steering angle—what does that indicate?

A stuck or out-of-range SAS value prevents calibration. One case logged a constant 3276° in ABS and diagnostic tools refused zeroing as out of tolerance. Inspect wiring, column integration, and complete a proper adaptation. [Elektroda, ptr92, post #16726401]

Do I need dealer online calibration to finish SAS adaptation?

Some Ibiza/Polo systems require an online routine via the manufacturer service portal. Independent tools failed until the workshop executed the online procedure, after which EPS and ABS accepted the angle. “I had to do it online on the site.” [Elektroda, Paull.pp, post #17973496]

Should I connect a charger during steering angle adaptation?

Yes. Technicians report voltage-drop sensitivity on these electric columns. Use a stabilized charger during coding and adaptation to prevent resets or failed learns. “Try to adapt with the connected charger.” [Elektroda, jacek074, post #16806649]

Will correct wheel alignment alone clear the EPS/ABS warnings?

No. Even with confirmed alignment, unresolved SAS basic setting or ABS angle recognition will keep warnings on. Complete the adaptation so both EPS and ABS agree on zero. Alignment supports, but does not replace, calibration. [Elektroda, ptr92, post #16726401]

How do I perform a basic steering angle adaptation (quick steps)?

  1. Clear faults, then initiate SAS basic setting with your diagnostic tool.
  2. Drive straight on a level road so left/right wheel speeds match.
  3. Stop with wheels straight; confirm the procedure reports “finished” and clear residual codes. “Sensor adapts while driving and compares these values.” [Elektroda, zyganps, post #16808361]

Could a mismatched pump or column cause persistent EPS faults?

Yes. The power steering pump/column must match the original part number. Using a different-number unit can block adaptation and keep the warning on. Verify part numbers before coding or further diagnostics. [Elektroda, panstalin2, post #16729612]

After replacing the column, ABS still doesn’t see the SAS—what next?

Verify terminals/pins are assigned correctly and reattempt the basic setting. A reported case showed ±2 steps at straight-ahead in EPS but ABS still could not read angle. Focus on ABS communication and repeat adaptation. [Elektroda, ptr92, post #16794227]

Could incorrect reassembly after a crash cause these issues?

Yes. An improperly assembled steering column after an accident can lead to failed basic settings and inconsistent angle values. Inspect mechanical alignment and column installation before software adaptation. [Elektroda, szymitsu21, post #16730618]

Do I need to recode modules when only mechanical parts were changed?

If no control units changed, focus on adaptation rather than recoding. Provide exact fault numbers from VCDS when requesting help, then run proper learns in ABS and steering assist. [Elektroda, ireneusz1981, post #16804090]

Edge case: my tool says the angle is outside tolerance—what does it mean?

Your diagnostic reported the SAS value out of tolerance because the ABS saw an implausible fixed angle. Fix wiring/assembly first, then redo the basic setting to bring readings into range. [Elektroda, ptr92, post #16726401]
Generated by the language model.
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