B3986 Tata Auto Trouble Code
B3986 Tata OBD2 reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.
The leak detection pump is part of the evaporative emissions system. This system tests the fuel system to make sure it is not leaking fuel vapors into the air. The system pulls a vacuum on the fuel system and holds it for a period of time.
B3986 Tata Possible Solution:
In-line Ford engines, along with those of most other manufacturers, begin the numbering of cylinders at the front and proceed in numerical order toward the back. In the V-engine design, Ford follows a similar design with the number one cylinder at the front left of the engine. In the V-6 configuration, cylinder 4 is at the front right of the engine and in a V-8, cylinder number 5 is in that location. Other manufacturers sometimes use an alternating pattern in the V-engines.
B3986 Tata Description For All Models :
- Tata Aria
- Tata E 220
- Tata Estate
- Tata Indica
- Tata Indigo
- Tata Mint
- Tata Nano
- Tata Safari
- Tata Sumo
- Tata Vista
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B3986 Tata Trouble Repair :
The sensors receive a 5 volt reference signal from the PCM. As pressure readings change, the sensor varies the voltage and the computer reads that to determine input. In the case of a broken wire, the sensor never sees the voltage and the computer assumes a major fault. So if you get this B3986 Tata code, first check to make sure you're getting a good 5 volt reference signal at the sensor. |
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