Chrisis
Check engine light problem and error code 121
(Translated from Greek)
Summary of the thread
The check engine light issue with error code 121 in a 2016 Opel Karl is likely related to the throttle position sensor (TPS). Possible causes include loose or corroded connections to the sensor. Solutions involve checking and securing the connections, cleaning the sensor, or replacing it if necessary.
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OPEL
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KARL
CarlyMechanic
Error code 121 typically relates to a problem with the throttle position sensor (TPS). Start by checking the sensor's connection for any loose or corroded wires. If the connections look fine, the sensor itself might need cleaning or replacement. Let me know how it goes or if you have any further questions!