Question about 2001 Volkswagen Jetta TDI

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2001 VW Jetta 2.0 with codes P1296, P1850, P1780 & P0725, can anywone help me fiigure out what is wrong?

Every now and then it shakes real bad(when I drive it & when it sit still), the hood smoked this morning & it wouldn't go past 20mph - then when I tried to go up a hill, it didn't make it.

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6ya6ya
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Posted on Jan 02, 2017

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chuckster57
  • 1102 Answers

SOURCE: what does a P1296 trouble code on a 2001 VW jetta

P1296 is a cooling system malfunction. The two things that will set this DTC is a defective Engine Coolant Temperature (ECT) sensor or the thermostat.

Posted on Feb 17, 2011

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czaa
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SOURCE: 2001 2.0 vw jetta p1780 p0322 p0725 p1850

1st did u chec plug wires or dist area-these things wear--r u gitten gas from fuel pump or injector systems--may want to run another scan-computer systems r very complicated n 2-3 opinions dont hurt-zone or discount A does free ones

Posted on Sep 09, 2009

TDISLine
  • 1874 Answers

SOURCE: 2001 beetle tdi for a

Fault codes explanation:
P0725 = Engine speed input circuit; CAN-BUS no communication with Engine Control Module (ECM); Invalid data received from ECM; damaged ECM.
P1850 = Data-Bus Powertrain missing message from ECM.
P1875 = Transmission Automatic Hall Effect sensor power circuit short to battery

I recommend you to access the ECM memory using VAG or similar diagnostic tool. But if you need to check a few things before scanning, I would recommend the following checks in your case:
- check the battery cables (clean and tight contacts)
- check engine ground cable (clean and tight contacts)
- check ECM (Engine Control Module) connectors and ground, the ECM is in plenum chamber under the windshield.
Having checked this wiring (most likely culprit), and made sure that contacts are clean tight, and connectors are fit, if the problem persists, (unlikely), you would need to get the codes using a VW equipment, to get the proper codes.
PS: there are some bulletins refering to ECM software updates on your model, so you should also check these out, if the problem points to ECM replacement eventually.

Posted on May 25, 2011

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Hi, have there been any running issues. I have replaced a few acclerator pedal units due to the codes. p1296 is different and further diagnosis would be rquired as this is a general cooling system fault.

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What does a P1296 trouble code on a 2001 VW jetta 2.0 L mean ?


P1296 is a cooling system malfunction. The two things that will set this DTC is a defective Engine Coolant Temperature (ECT) sensor or the thermostat.

Feb 17, 2011 | 2001 Volkswagen Jetta TDI

1 Answer

Engine light on code p1296 was found the car is a 2001 jetta 80000 miles runs good all censor replace in the last five months it warms up fast idle good. pass smog. what can the problem be. thank you...


VW DTC 17704 (P1296) - Cooling system malfunction.

Coolant Temperature Sensor (CTS) is faulty and reading an incorrect temp'.

Replace with the new version of the sensor, clear the code.

If indicated coolant temp' is too low the thermostat is sticking open.

Jan 15, 2011 | 2002 Volkswagen Jetta TDI

1 Answer

2002 vw jetta engine code 1296. what does it mean.




My 2001 Jetta GLS Check engine light is on and I am getting 2 trouble codes P0171 and P1296. What does this mean? My temp gage is also reading nothing at all. 1 more thing I noticed when my low fuel light came on the other day my temp gage began to work but when I filled up with gas the temp gage went to zero again.

P1296 indicates that the car isn't warming up fast enough or at all. Determine if the gauge is faulty by checking the temp of the engine with an infrared thermometer. A healthy engine should operate at 190-200 deg. F fully warmed up. It may be that the gauge is accurate and your engine isn't reaching optimal temp because of a faulty thermostat. It also could be that the engine is actually warm and the gauge is wrong. Use the search feature, we've gone over this one a few times. Also note that P1296 has been mis defined a few times too. P0171 has been discussed here a million times. Check the trouble codes section and the search box.
,,,,, I pulled this off of the OBD home page, It is a close shot for your car, Hope it helps.

Nov 11, 2010 | 2002 Volkswagen Jetta TDI

1 Answer

2002 jetta tdi, got code po 725, p1780, p1850. Transmission starts in second gear and will not go in to fourth gear. Any help? Thank you


i had a few of these pop up. The PCM and the ECM had a brain fart. Have the codes cleared and if you have the same luck as me all will be back to normal. That was the fix...

Dec 22, 2009 | 2001 Volkswagen Jetta TDI

2 Answers

2001 2.0 vw jetta p1780 p0322 p0725 p1850 The car stalls out intermintently and will not start for an hour. It was report that it usually happens when the car comes to a stop. The car then run rough and...


1st did u chec plug wires or dist area-these things wear--r u gitten gas from fuel pump or injector systems--may want to run another scan-computer systems r very complicated n 2-3 opinions dont hurt-zone or discount A does free ones

Sep 09, 2009 | 2001 Volkswagen Jetta TDI

2 Answers

2001 vw jetta automatic transmission problem


Have you checked your transmission fluid?

May 19, 2009 | 2001 Volkswagen Jetta TDI

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