P1654 - Please check DTC Memory of control panel ECU

anyone of you guys knows what this code means???

 

have u messed wit your coolant temp sensor? its related to that.

 

actualy i didnt mess it up..but from few days i'm hearing a voice like tic tac in the dash board and when i hear the voice the car temp watch works on and off..
that's true mate thanks for the help

 

That indicates a short or open circuit in the instrument cluster portion of the dual engine coolant temp sensor. The sensor is a 4 pin style and actually 2 sensors in one. One is for the ECM for engine managment, the other side is just for the cluster gauge basically. 95% of the time, it's just the sensor with an internal fault. G2 has nothing to do with how the engine runs. They're fairly inexpensive and not TOO bad to change. Just be sure you get also the sealing o-ring and a new retaining clip. If you reuse either of those, you'll hate yourself later.

There is a chance you could have a wiring fault or even an instrument cluster problem but like I said, 95% of the time it's the ECT sensor.

 

thank you aspen79...
i got another code but this one seems to be easy though because the sensor name is visible
p1340 camshaft and crankshaft position sensor

from what i know the crank has a sensor and the cam has it's own sensor..how can i know in wich sensor the problem is??? or that the problem is not the timing belt??

 

P1340 is cam sensor/crank sensor correlation error. In other words, the signals are not in sync. Assume you have a 1.8L, yes? It could be one of two things. Either the timing belt is stretched, or it's actually a tooth off somehow OR the chain at the rear of the head which runs the intake cam has stretched. There are other causes but those are the two most common. Best way to check for a stretched CHAIN is by removing the cylinder head cover and seeing if the marks on the cogs line up with the marks on the cam caps. The belt, you need to bring the crank to TDC and line up the mark on the balancer with the one (very hard to see) on the cover and then take the upper belt cover off and check if the mark on the top gear is lined up with the notch on the cylinder head cover (or valve cover if you prefer). Either way, you should find out soon. If the cam timing gets too far off, valves and pistons will try to occupy the same space at the same time, and the two don't get along well and it's a VERY expensive repair.

 

i own a 2.0 my problem is that when the rpm of the car is between 1000 and 2000 the rpm needle jumps and the car shakes..i scanned it and got this cam and crank sensor..and when the rpm is at 2000 and above everything is ok and that happens only when the car is moving..so i suppose that those signals are not is sync i will try to fix it and will give you a feedback about it..thank you aspen

 

Ahmad Sabra you are not alone
I have an Audi A4 2.0L with 100% the same problem; at first I even thought that you was talking about my own car
Let us know how you are getting on..

 

MAPSSANTO
what's ur audi problem?? do u mean the vibration between the 1000-2000 rpm? or the p-1654?? both problems were solved in my car

 

if u mean the p-1654 u have to change ur temperature sensor wich is located in the back of the motor..in front of the battery place..

and if ur problem is the vibration...u have to check someone who can fix the TCM ( transmission control module) or u have to change it..my mechanician fixed it for me for only 250$ the price of a new one in my country is 1800$ and the whole transmission + tcm price is 2500$....so if u can fix it...that will be better for ur pocket lool