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Engine trouble code 18613?

Tiny
BRITTNEYMANSKER
  • MEMBER
  • 2003 VOLKSWAGEN JETTA
  • 97,303 MILES
I have a code scanner and that I used to check the check engine light in my car. It gave me this code for the engine: 18613 (01/02). I am trying to figure out what these codes are for and what I need to do to fix them. If anyone can please let me know I would appreciate it. Thank You.

~Brittney
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Saturday, December 1st, 2012 AT 10:31 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

The code:
18613/P2181 - Cooling System Performance

This typically gets triggered due to an issue with the coolant temperature sensor. When the coolant temperature sensor fails, it sends error code to the ECM and that turns on the check engine light.

https://www.2carpros.com/articles/how-a-coolant-temperature-sensor-works
https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor
https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

Check to see if the sensor if faulty.
I have attached the testing procedure for the coolant temperature sensor below.

Please let me know of any questions.
Thank you.
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Thursday, September 30th, 2021 AT 12:18 PM

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