If there’s a problem preventing the light from coming on, you’ll see this code. With most vehicles, the TCM is the only computer that can turn on the check engine light. P0700: Transmission control system malfunctionĪgain, this is an informational code. On newer vehicles, these parts are programmed to work with just one specific vehicle, and can’t be programmed to work with another. If you have this code, chances are that one or the other has been recently replaced, and if you installed a used part, it’s not configured to work with the newer part. This is another purely informational code, telling you that the ECM and the TCM aren’t on speaking terms. You can take your car to the dealer and have the TCM replaced. You don’t have to worry much about this code – it’s just telling you that there’s an internal error in the transmission control module (TCM). This code could mean that the fluid sensor needs to be replaced, but it could also be something far more complex, especially if accompanied by other P codes. Some vehicles have a dash light that will say “trans over temp,” but not all vehicles have this feature. P0218: Transmission over temperature condition The following are among the most common P codes: Your mechanic can perform a computer analysis that will reveal the problems that can be causing the Check Engine Light to come on in the form of alphanumeric codes known as P codes. If your Check Engine Light has come on, there are a number of conditions that could be causing it.
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