2014 GLK350 Base OBD P000300
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Joined: Feb 2025
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From: Macclenny, FL
2023 Mercedes GLB250, 2014 GLK350, 2008 C300, 2007 C230 Sport, 2001 SLK320
2014 GLK350 Base OBD P000300
Good morning,
I'm new to the forum & still trying to figure out where to post on the correct forum, please accept my apology if this is not the correct forum. My wife vehicle is a 2014 GLK350 Base model with VIN WDCGG5HB1EG3104037 & 105,000 miles on the dash, I had just replace the HPFP / high pressure fuel pump about 2 weeks ago from a check engine light with code telling me the pump was bad, a few days ago she told me the check engine light came back on, after reading the code P000300 / the quantity control valve has a short circuit to ground. If anyone can assist me with trouble shooting this code, I have looked all over the internet & can't seem to find any help please. I have went back to check the connector on the HPFP & everything seems to be looking ok, no burnt marks on the connector nor broken wires.
Thanks,
JoeE
Macclenny, FL
I'm new to the forum & still trying to figure out where to post on the correct forum, please accept my apology if this is not the correct forum. My wife vehicle is a 2014 GLK350 Base model with VIN WDCGG5HB1EG3104037 & 105,000 miles on the dash, I had just replace the HPFP / high pressure fuel pump about 2 weeks ago from a check engine light with code telling me the pump was bad, a few days ago she told me the check engine light came back on, after reading the code P000300 / the quantity control valve has a short circuit to ground. If anyone can assist me with trouble shooting this code, I have looked all over the internet & can't seem to find any help please. I have went back to check the connector on the HPFP & everything seems to be looking ok, no burnt marks on the connector nor broken wires.
Thanks,
JoeE
Macclenny, FL
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Joined: Sep 2013
Posts: 2,346
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
Good morning,
I'm new to the forum & still trying to figure out where to post on the correct forum, please accept my apology if this is not the correct forum. My wife vehicle is a 2014 GLK350 Base model with VIN WDCGG5HB1EG3104037 & 105,000 miles on the dash, I had just replace the HPFP / high pressure fuel pump about 2 weeks ago from a check engine light with code telling me the pump was bad, a few days ago she told me the check engine light came back on, after reading the code P000300 / the quantity control valve has a short circuit to ground. If anyone can assist me with trouble shooting this code, I have looked all over the internet & can't seem to find any help please. I have went back to check the connector on the HPFP & everything seems to be looking ok, no burnt marks on the connector nor broken wires.
I'm new to the forum & still trying to figure out where to post on the correct forum, please accept my apology if this is not the correct forum. My wife vehicle is a 2014 GLK350 Base model with VIN WDCGG5HB1EG3104037 & 105,000 miles on the dash, I had just replace the HPFP / high pressure fuel pump about 2 weeks ago from a check engine light with code telling me the pump was bad, a few days ago she told me the check engine light came back on, after reading the code P000300 / the quantity control valve has a short circuit to ground. If anyone can assist me with trouble shooting this code, I have looked all over the internet & can't seem to find any help please. I have went back to check the connector on the HPFP & everything seems to be looking ok, no burnt marks on the connector nor broken wires.
