What does P0730 mean on a Chrysler 300?

Answer 1

A P0730 code indicates a problem with the trans selecting the wrong gear which could be due to a number of causes/faults and in some cases, needs a new trans or rebuild. What year car? have you checked, changed or flushed the trans fluid ? I'd start with flushing the trans fluid if that has not been done already or at least check for low fluid level, external leaks, and also inspect the fluid to see if it's brown rather than pinkish/reddish , dirty or smells burnt which could indicate internal problems....if it has the Mercedes trans, there is no dipstick so have a dealer or shop inspect it.

"Possible causes

- Low Transmission Fluid level

- Dirty transmission fluid

- Shift solenoids

- Shift solenoids harness or connectors

- Transmission mechanical problems

- Transmission hydraulic control circuit

Tech notes

Start by inspecting the transmission fluid level and condition, and change fluid if necessary.

When is the code detected?

The TCM has detected that the transmission is trying to mechanically shift to a lower gear than intended

"Some of the 300's have a Mercedes trans and there was an issue of fluid leaking at the electrical connector. The problem with these how ever is there is no dip stick for you to check the fluid with. If this is the case with your 3oo, then go to the dealer and ask them to check the fluid level for you. They should do this for free."

.................

"The Mercedes trans is good, with the exception of that leak I mentioned. There is a dipstick tube with a cap on it. The dealer uses a special dip stick to check the fluid."

Answer 2

Trouble code P0730 means:Incorrect gear ratio