1998 Volkswagen Jetta TDI Q&A

1998 Volkswagen Jetta TDI Question: check engine light

Received a check engine light code of p1550. How critical is this to get fix? -
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Due to an ignition component and/or engine coolant temperature sensor failure, the Check Engine Light may illuminate. Replacement of the failed component will be necessary to correct this concern.
A dirty or failed throttle body can cause various drivability issues and illumination of the Check Engine Light.