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|Titan Engine, Transmission & Drivetrain Technical discussion about the engine, transmission, and drivetrain.|
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ive been doing a little research and I have a 05 nissan titan stuck in fail safe mode with "AT Check" light on. Tranny is in "D" but is stuck in high gear and will not downshift or upshift and tiptronic stop working.
Problem started right after i jump started the car, it was perfectly fine before that and I did not jump backwards.
I checked for codes, there are none, tried disconnecting the battery to clear but will not.
Question is, how do I fix this problem and how do i get it out of "fail" or "safe mode"
Ive seen few threads with same problem and nobody has answered?
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ka titan (04-21-2014)
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
The revolution sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. The pulse signal is sent to the TCM which converts it into vehicle speed.
On Board Diagnosis Logic
œ This is an OBD-II self-diagnostic item.
œ Diagnostic trouble code gP0720 VEH SPD SEN/CIR ATh with CONSULT-II is detected under the following conditions.
. When TCM does not receive the proper voltage signal from the sensor.
. After ignition switch is turned ONh, irregular signal input from vehicle speed sensor MTR before the vehicle starts moving.
œ Harness or connectors
(The sensor circuit is open or shorted.)
œ Revolution sensor
œ Vehicle speed sensor MTR
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