98 audi currently my car is in fail safe mode . now my check engine light is on.i had the computer read the codes and it was saying my transmis contr is missing a message from my power tran. now i notice some water in the passager side of the car. what causes this and how i can fix the problem?

Connect it to a professional grade scan tool computer.

Sometimes the engine failsafe mode is triggered due to a sensor failure or an electrical glitch. It's also common for a security system fault to engage this warning light, which means it's not always a mechanical issue that's causing the failsafe.
Oct 31, 2018

What is the Engine Failsafe Mode? ' YourMechanic Advice

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Vehicle Engine Failsafe Mode Explained and How to Reset it

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In most cases, the check engine light will turn ON as the engine switches to failsafe mode. But having a check engine light does not ...
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‎What is the engine failsafe... · ‎Fail-Safe mode isn't always...

Hi, fail safe engine mode means that the ECM (Electronic control module) or computer box as some know it, is running in a mode whereby it is bypassing a particular component in the engine that has gone faulty in order to keep the car from cutting out, or has picked up an erratic function in any component, which is more than likely an electrical problem and could be one of the following which have to be checked by computer analysis equipment at the Jaguar agents or any one else that is familiar with the process that is required to trace the fault. Here are the possible causes: 1.Erratic wire connection 2, Engine cooling Fan thermal switch. 3. Control module 4. CKP sensor 5. Computer box not functioning correctly (a rare fault) 6.Engine coolant fan not working, or running erratically. Unfortunately only a computer analyis will depict the location of the fault and if the repair man is very experienced will be able to sort it out quickly with the computer analysis.( Although I strongly suspect it to be the cooling fan thermal switch which is working erratically and will soon fail completely.)
So get your car to the experts as soon as possible especially if it could be the cooling fan thermal switch, which could cost you a major expensive engine repair job if your Jaguar overheats.
Have a good day.

you have a transmission code you have to check the code out first to find what sensor is causing the problem this is a fail safe mode

safe mode means the computer is protecting the engine by shutting down some operations - like half the cylinders.

go to autozone & have codes read (DTC) free.

Sounds like you have a bad temp sensor and the computer is going into fail-safe mode causing the SES light to come on and the fans to run, if you have a scan tool check and see what the coolant temp reads.

can't locate idle control sensor on 1998 Chrysler Town& Country van

you have lost power/check fuseable links,main fuses/and of corse battrey cabels at the battrey

sorry to say, you will need to take it in, it needs to be hooked up to their computer to reset and have it start up poperly. It just like a pc when it crash it will try to start in safe mode until you select "Normal" start up

One or more of about 500 different things. The vehicle needs to get scanned for a proper diagnosis.

The car has entered into fail safe mode. It wil not allow the engine to rev high but allows you only to get to a mechanic or to get some oil into the engine. What's the level like? Is there any trace of leakeage?