Question about 2002 Volkswagen Jetta TDI

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1435 1421 1624 1823 1850 check engine codes 02 VW Jetta

1435 1421 1624 1823 1850 check engine codes are coming on my 2002 VW Jetta. What might be causing this? I'm hoping it might be something I can fix myself.

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  • mxpx43095 Jul 30, 2009

    It is a VR6. Please, let me know if you need any additional information.



  • mxpx43095 Jul 30, 2009

    It is a VR6. Please, let me know if you need any more information.

  • mxpx43095 Aug 05, 2009

    I ended up changing my battery, and it's been 2 days now and the check engine light hasn't been back on. Thank you very much for the help!

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Ok, the 1435 and 1421 are concerning the air injection pump. it is experiencing all kinds of difficulties and, it should be replaced asap, if possible. The 1823 code represents an issue that concerns the Pressure control solenoid number three. its an communication issue, usually traced back to a faulty ECU. have the ECU harness and pressure solenoid number three inspected. The 1850 is also a communication error code that is concerning the signal that is being received from the ECU as well. Check the ECU harness for faults. if the harness is in good condition, replace the ECU. It seems to be malfunctioning. Check the canister bus connections as well.

Ok, this 1624 is a totally different code here. It concerns the TCM(transmission control module). have this TCM tested at your local mechanic shop. special tools are need to preform this test.

***NOTE-((It has been know that if you simply change your battery, if your current battery is old, to a newer battery, this will solve most of these codes. A weak battery will induce false sensor actions, in return, sending codes through the CPU. i would advise to switch out the old battery if it is indeed old. Also, The pressure control solenoid are part of the trans valve body. if the ECU and harness is ok, replace the control solenoids asap.)))

Posted on Jul 31, 2009

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