The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code B004B
At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.
Difficulty Level (Easy)
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Repair Time (20 Min.)
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| Cost Prediction : $ 40-75 |
If your o2 sensor circuit low voltage (bank 2 sensor 2) check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system B004B and engine control unit are in charge of monitoring a bunch of different o2 sensor circuit low voltage (bank 2 sensor 2), and if they get a reading that's a little out of whack, up pops the check engine light.
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B004B is a kind of Body Trouble Code
Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems. |
You can view according B004B DTC for your car model. We selected several models to see obd2 solutions click and view it.
| +B004B Lada Vaz 2107 | +B004B Hispano Suiza H6 | +B004B Alfa 40-60 | +B004B Aixam Evolution | +B004B Peugeot 208 |
Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.
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