I have a 1997 audi a6 Quattro awd and I'm getting

run the fault codes and look for problems with the TCM or torque converter clutch servo/solenoid.

code refers to gear 3 incorrect ratio. causes ---wiring---TR sensor/switch--shift solenoids-- transmission mechanical fault. It is not possible to have the wrong ratio unless you have done something serious to the tranny. So the cpu is reading that the gear selected is wrong for the settings in the cpu. This means that the shift solenoid is not working properly and/or the TR sensor /switch is faulty. I would go for the sensor as it probably controls the solenoid as well. Use only genuine as cheaper units are not always compatible with the cpu.

PO705 is Transmission Range Sensor Circuit Malfunction. PO733 is Incorrect 3rd Gear Ration Information. P1618 means that the ECU and the TCM are not communicating properly. PO705 & PO733 can be related to P1618. Check the wiring going to the transmission. Look for a pinched wire from the car being put on a rack or possibly an accident you may have had recently. If you can find no problems with the wiring or connections then it is time to see a professional transmission expert. It may just be that the transmission has an internal problem.

po733- gear 3 ratio incorrect
this is how to fix. You can try replacing the shift solenoids inside the transmission as long as the trans fluid is nice and clean looking it will be nice red color . If the trans fluid is dark or burnt looking , it maybe time for a new ******

P0700 Transmission Control System (MIL Request)
P0730 Incorrect Gear Ratio
The gear ratio has to do with how many teeth there are meshing with another gear in the transaxle.

po733- gear 3 ratio incorrect, po734- gear 4 ratio incorrect. this is how to fix. You can try replacing the shift solenoids inside the transmission as long as the trans fluid is nice and clean looking. If the trans fluid is dark or burnt looking, it time for a new tranny if you need further assistance please let me know and i will be glad to assist you. Thanks, Midwest-Tek

Under bonnet on the right side of the car face to windscreen you will find the fuse box / relay plate - engine bay. Here is placed the Data Link Connector (DLC) for Audi A6 Quattro 1997.

po733- gear 3 ratio incorrect, po734- gear 4 ratio incorrect. this is how to fix. You can try replacing the shift solenoids inside the transmission as long as the trans fluid is nice and clean looking. If the trans fluid is dark or burnt looking, it time for a new tranny

Quattro Sedan, Quattro Wagon, Sedan, Wagon, which one, need email address to send to

need to get trans checked by knowledgeable machanic,maybe its not engaging because the selector isnt working,big money if incorrect diagnosis,but does need to be looked at by expert