Lon Boll 12 U1850 Code:

OBD-II Diagnostic Network (U) Trouble Code

Trouble In Lon Boll 12 U1850 Possible Cause

Possible causes of Lon Boll 12 U1850 include a faulty oxygen sensor, faulty electrical connector at the oxygen sensor, faulty or shorted wiring in the oxygen sensor circuit, a blown fuse for the oxygen sensor (if applicable), low or excessive fuel pressure, a vacuum leak on the engine, excessive exhaust leaks, or a faulty PCM.

Common Symptoms For Lon Boll 12 U1850

  1. As the output shaft is turned (by the engine) the electro magnetic output speed sensor uses the spaces between the splines to provide voltage signal interruptions in the circuit
  2. Look for shorted or burned wiring and replace circuitry and connectors as required
  3. The PCM will read the sensor resistance and pass it
  4. To perform a thorough diagnosis, any transmission leaks should be repaired and the transmission should be filled with the proper amount and type of fluid (if the fluid smells really "burnt" and you are experienced enough to detect it, you may go ahead and condemn the transmission)

Similar Problems

Computer And Auxiliary Outputs
Low Coolant Circuit
Transmission Engaged At High Throttle Angle

Lon Boll 12 U1850 Troubleshooting

Broken engine mountings can cause banging and graunching noises. There are two main types of mounting those centrally placed close to the bottom of the block and those higher up the block which mount on to the inner wings or chassis members. Lon Boll 12 U1850 OBD 2 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.

How to turn off Lon Boll 12 U1850 check engine light ?

There are two ways to turn off the check engine light:

A repair technician can do so once repairs have been made.
The OBD II can automatically turn it off when it fails to detect the problem after several diagnostic cycles.

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