Humber 12 B2785 Code:

OBD-II Diagnostic Body (B) Trouble Code

Trouble In Humber 12 B2785 Possible Cause

The most likely cause of Humber 12 B2785 code being stored is a defective automatic transmission cooler control valve or valve position sensor. Other causes may include corroded, open, or shorted wiring or connectors, a loose control module ground strap, or broken ground wire.

Common Symptoms For Humber 12 B2785

  1. It can accurately diagnose computer and circuitry problems by monitoring vehicle operation while the vehicle is being operated
  2. Look for shorted or burned wiring and replace circuitry and connectors as required
  3. Intermittent conditions can prove to be quite a challenge to diagnose and in extreme cases may have to be allowed to worsen before a correct diagnosis can even be attempted
  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

Vehicle Speed Control And Idle Control System
TP Sensor Learn Not Complete
Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit

Humber 12 B2785 Troubleshooting

Having one of the signs of a bad gasket is usually not enough to prove a failure of a gasket, but multiple symptoms are most likely the result of gasket failure. It is advisable to have the vehicle driven as little as possible whenever the symptoms occur. Depending on the symptoms, either have the gasket replaced or repaired.
The cost of replacing a gasket usually varies from one mechanic to the other. Replacing a gasket is quite expensive in modern engines due to their location and the amount of labor that is required to replace them. Humber 12 B2785 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 Humber 12 B2785 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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