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How to solve the P0700 trouble code?

1 Answers

Karen

07/30/25 3:44am

When the P0700 trouble code occurs, the vehicle should be promptly sent to a 4S shop or repair shop for maintenance. The appearance of the P0700 trouble code indicates a transmission fault, but specific data stream analysis is required. Generally, intermittent faults can be resolved by clearing the trouble code. Here is additional information: 1. Introduction to the P0700 trouble code: The P0700 trouble code refers to a transmission control system fault (Malfunction Indicator Lamp request). The Transmission Control Module (TCM or TCU) collects information from various sensors and the Engine Control Module to help the transmission determine when to shift gears, improving vehicle performance, ensuring smooth shifting, and enhancing fuel efficiency. The Malfunction Indicator Lamp (MIL) illuminates a yellow or red engine symbol on the dashboard when the control module detects a fault. This trouble code indicates that the Powertrain Control Module (ECU) has received a request from the Transmission Control System (TCU) to illuminate the MIL. 2. Possible causes of the fault: Insufficient gear oil or poor-quality gear oil; severe wear on gear tooth surfaces, leading to excessive meshing clearance; fatigue spalling or chipping of gear teeth; excessive wear on the intermediate shaft or second shaft, or severe wear on spline shafts and internal gear splines, resulting in excessive clearance; bent shafts or loose shaft locking components; loose bearings or damaged bearing cages; contact or rubbing of non-working parts of the shift fork, among other factors.

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