toyota rav4 trans. won't lock into 3rd gear

Asked by Jan 17, 2016 at 07:46 PM about the 2002 Toyota RAV4 Base 4WD

Question type: Maintenance & Repair

obd codes po750, p0758

1 Answer

79,115

Possible causes po750: - Low transmission fluid level - Dirty transmission fluid - Faulty shift solenoid 'A' valve - Shift solenoid 'A' valve harness or connectors - Shift solenoid 'A' valve circuit is open or shorted Tech notes When the a transmission solenoid is malfunction, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced.............................Possible causes po758: - Low transmission fluid level - Dirty transmission fluid - Faulty shift solenoid 'B' valve - Shift solenoid 'B' valve harness or connectors - Shift solenoid 'B' valve circuit is open or shorted What does this mean? What does this mean? When is the code detected? The P0758 code is detected when the gear required by the ECM does not match the actual gear when vehicle is driven. Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light) - Transmission will not shift gears P0758 Toyota Description Shift solenoid valve 'B' is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position.

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