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What code reader is the best for BMW 1999 750il

BMW 1999 750il: having check engine and Transmission fail prog errors. What is the best code reader to buy. And what are the steps to troubleshoot this?

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Error codes PO600 and P1747

P1747 CAN-Bus Monitoring
P0600 Serial Communication Link
These codes indicate a communications failure between the transmission control unit and ABS/traction system. These modules share information which allow them to operate properly. It is likely that one of the modules has an internal fault.
With these generic codes it is not possible to determine the exact nature of the issue. Your best bet is going to be a dealer diagnosis using their sophisticated equipment so that the root cause can be determined and eliminate any guess work. The p codes are too generic in this case, unfortunately.

Jun 03, 2016 | 2001 BMW X5 4.4

1 Answer

What are the causes of engine failsafe p in Bmw x5 2006 model

The reason is the engine speed and transmission speed sensors don't agree. It could be caused by a bad transmission speed sensor, bad transmission fluid, a failed solenoid in the valve body ( in the transmission pan), a worn out valve body, a bad transmission, improper tires(that don't match each other), a faulty MAP sensor (air flow sensor on the air intake), faulty engine speed sensor and possibly a few other things.

Get the codes with a reader, and it might direct you in the right direction. But take the reading with a grain of salt, because it rarely tells you the exact problem. My fail safe came on and the code was TCC solenoid, but after replacing that, I had to install a rebuilt valve body to solve the problem.

Jan 14, 2016 | BMW Cars & Trucks

1 Answer

2005 BMW 545i engine Code P0962 "Pressure Control Solenoid "A" Control Circuit Low"

The common joke acronym for "BMW" is Break My Wallet. BMWs are very nice cars but they are somewhat complex and quite expensive to maintain.

Take the car to an auto parts store such as Autozone. They have an OBDII code reader that can reset (clear) the error code. If the code does not come back on, then you're good to go, However, if it does come back on then the fix is have it serviced.

I would take it in to the dealer and ask them for an estimate of costs and if you think it's too much then perhaps find an independent shop to do the work (rather than the dealership).

Good luck!!

Nov 01, 2014 | 2005 BMW 545i

1 Answer

I have a 2004 BMW X5, i was driving up a hill when the trans failsafe prog light came on, it has done this before & I was told pull over turn engine off, wait 5min at it will go, which it did. Though...

The transmission has gone into limp mode. My Boomer done the same thing' if it wont reset itself i think the only option is a BMW dealer to faultfind. Very complicated computor controlled transmission beyond any novice im afraid.

Aug 16, 2017 | Cars & Trucks

1 Answer

Bmw 535i 1997 transmission fail safe program keeps coming on

Check compatibility of gearbox ECM with gearbox. You will need the serial codes of the ECM and ask manufacturer for relative compatibility with gearbox type.

Nov 14, 2012 | BMW 535i Cars & Trucks

1 Answer

Transmission sensor ( fail safe prog )

I have had to have my BMW X5 2004 transmission rebuilt TWICE in the last 2 years. First, @80K, it just stopped, though engine rev'd. When the trans place opened it up, they said the trans oil was burned, so they rebuilt it for $2,500. I had problems over the year and then it went again during the warranty and they repaired it, free. Lasted 14K Miles. I got ALOT of Trans Failsafe Prog lights. When I turned off the car, it reset, but ultimately came back on, and forewarned an impending trans failure. When the trans went the 2nd time, I bought a USED 40K trans from LKQ (I was lucky to find one with low mileage) for $2K and had the trans place put it in. NO PROBLEMS now. I got this advice from a BMW dealer parts guy out in PA - NO ONE can really rebuild BMW Trans well. Either go for a remanufactured one, or a low mileage used one. Getting them rebuilt at the local trans place will only give you heart aches and you'll end up doing the job again. ALSO: DO NOT WAIT FOR the BMW recommended 100K miles to replace the trans fluid. I suggest 60K. That's the #1 cause of trans failure. I'm out $6K on trannys now, but I'm about to take legal action. One more thing - I used K-Solv in my radiator, and the Trans guy told me that it clogged up the trans cooler. He took off the cooler lines and put a video tube camera up there, and yes, it showed cloggage. Jury is out on who's the real culprit here. Bottom line: Trans Program Failure is a pre-cursor to transmission failure. Get ready... Don't let a local shop rebuild it! Start shopping for a low mileage used one!

Jun 25, 2012 | 2005 BMW X5

2 Answers

Computer says 'trans fail safe prog'

Your car is in "LIMP" mode. The computer sensed a fault from transmission and has set it in "LIMP" mode so it's still drivable but it needs to be inspected by BMW. It could be something as simple as a dirty connection or moisture or possible early warning a more serious issues, but have BMW dealer look at it before it gets REALLY costly and leaves you stranded.

Feb 18, 2011 | BMW 7 Series Cars & Trucks

1 Answer

Bmw x5 trans fail safity prog it will start but does not sound right also the battery light is on

9 out of 10 times a defective battery/ charging system causes problems with transmission. Why? because a computer controls your transmission. Have battery and charging system checked out.

Aug 18, 2010 | 2002 BMW 5 Series

2 Answers


Hi; If I get the 'Trans Failsafe Prog" message twice within about 2 hours, The SES light will go on automatically. Since I do not seem to have any real transmission problems, this SES message clears itself in about 24 hours. The "Trans Failsafe Prog" messageseems to be used to indicate other transmission problems as well, like loss of transmission fluid, so be careful. I have a 2002 X5. Cheers. Omer

Dec 31, 2009 | 2002 BMW 5 Series

1 Answer

Service engine light

service engine light can come on for any number of reasons anything from a sensor failing, to running to rich or lean, or even a misfire

if its on there is something wrong

the best thing to do it to have a code reader put on it to find out what the code is for.

May 16, 2009 | 2000 BMW 3 Series

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