2002 Golf GTI 1.8L and Jetta GLS Wagon 1.8L;
2003 Beetle 1.8L and 2.0L; Jetta GLS Wagon 1.8L and GLS
2.0L; and Passat 1.8L;
2004 Beetle 1.8L and 2.0L; Jetta 2.0L and GLS 2.0L;
2005 Beetle 2.0L; and
2006 Passat 2.0T 2.0L
Check Engine light is on. Trouble code: P2181 (18613).
Defective Coolant Temperature Sensor (CTS) Wiring
1. Measure engine temperature and ensure it is getting up to
proper operating temperature.
2. Connect a Volkswagen-compatible scan tool and monitor
engine temperature on the scan tool. Compare to the actual engine temperature
to determine if the coolant sensor is working correctly.
Code P2181 (18613) is for cooling system performance. It
generally means that the vehicle has a defective or leaking thermostat. If the
vehicle does not warm up quickly enough to go into closed loop operation within
the time programmed into the engine control module, it will set this code. This
is generally cured by replacing the thermostat.
Courtesy of Identifix, Inc.
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