What does diagnostic code P0731 mean?

The P0731 code occurs when the PCM detects a discrepancy between the speeds of first gear’s input RPM sensor and transmission output RPM sensor. As a result, the vehicle cannot shift into first gear, and it could indicate that the transmission is slipping.

What does p0733 Gear 3 incorrect ratio mean?

Gear 3 incorrect ratio is the technical definition of the P0733 trouble code What the P0733 code means The P0733 code means that the powertrain control module (PCM) has detected something unusual with the ratio of the third gear in the vehicle’s transmission.

What are the symptoms of an incorrect gear ratio code?

If there are other transmission codes, repair those problems first before proceeding with an incorrect gear ratio code. Symptoms of a P0733 trouble code may include: Check Engine Light illuminated (Malfunction indicator lamp) Causes of this DTC may include: Internal blockage inside transmission main control

When to look for a p0733 error code?

P0733 is detected when A/T cannot be shifted to the 3rd gear position even if electrical circuit is good. If the actual gear position is higher than the position (3rd) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

When do you get a 3rd gear code?

This code can show up in vehicles with an automatic transmission when there is a problem shifting into 3rd gear, or while driving in 3rd gear. The computer controlled automatic transmission uses multiple gear ratios to increase vehicle speed while maximizing the power output from the engine.