01772 signal from level control pressure sensor G291

Level control pressure sensor G291 in automatic height control system is used to distribute the require amount of air or height pressure to each four wheel. Fault code 01772 signal from level control pressure sensor g291 is set in controller when height control module get a faulty signal form G291.All the four height suspension pipe is connected to the Level control pressure sensor from where they get air pressure to level up and level down the height or vehicle.

Level control pressure sensor is connected with height level control module. Level control module monitor the vehicle height from height level sensor fitted on each sock ups.G291 sensor send signal to control module about vehicle height and according to that control module send the signal to pressure sensor. The pressure sensor send the require amount of air pressure to air matic shock ups.

Failure of level control pressure sensor can cause the height level to go down. As if G291 sensor will fail then air or pressure present inside the each air matic shock ups can go down. Because failure of G291 will loss it control on height level control system.

Cause of 01772 signal from level control pressure sensor g291 :

  • Faulty level control pressure sensor G291.
  • No communication between G291 and height control module.
  • Damage wiring harness of G291 sensor.
  • Leak at air matic pipe or at air compressure.
  • Also Faulty level control module J197.

How risky it is drive with 01772 :

Driving with fault code 01772 can be risky as it control the height of vehicle. If it get fail the height of vehicle can be up or down from any side.for example if vehicle high low at left side and high at right side.Than at this condition driving vehicle is is risky as driver will not make any decision while driving traffic area.

Same as if hight of vehicle is high from rear side and low from front side.then at this condition driving vehicle will look like that we are going down from a high slope bridge even at plane road surface.

Symptoms :

  • Height of vehicle can go down.
  • Height of vehicle can go down fron only on side.
  • Also Air suspension light can be display on cluster meter.
  • Fault code can be store in controller.

Solution 01772 of signal from level control pressure sensor g291 :

  • Replace faulty level control pressure sensor G291.
  • Repair or replace faulty level control module J297
  • Also Repair damage wiring harness of G291 sensor.
  • Replace leak air matic pipe.

Tools require to solve 01772 :

  • Tool box to remove G291 sensor.
  • Scanner to monitor the signal of each height level sensor.
  • Measure tape to measure the height of vehicle from wheel arch.

Special note :

When found in audi Q7 or Audi A6,Before changing level co trol module pressure sensor G291. Check for the reading or all height level sensor. If found any fluctuations in level sensor then repair or replace thet first. That will solve the problem . If it does not solve the problem then go for checking leak pipe, failure of level control module, or damage wiring harness of level control pressure sensor g291.

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