P20F5 Reductant Consumption Too High
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2004 CLK 55 Cabriolet
P20F5 Reductant Consumption Too High
Hey all, I searched several ways for an answer to my question but didn't turn up an answer. I also posted this in the diesel forum but figured I'd cover my bases here, too.
2015 ML250, CEL light on. I ran the code. It came up on the $7E8 module and the code is "P20F5": "Reductant Consumption Too High"
I tried erasing the code but it kept coming up. Vehicle seems to be running fine. No further warnings or lights.
Vehicle has 55,000 miles and the dealer said they filled DEF tank at the 50k service. Also, there aren't any messages telling me that DEF is low or to add more.
Anyone have an idea what this means?
Thanks!
2015 ML250, CEL light on. I ran the code. It came up on the $7E8 module and the code is "P20F5": "Reductant Consumption Too High"
I tried erasing the code but it kept coming up. Vehicle seems to be running fine. No further warnings or lights.
Vehicle has 55,000 miles and the dealer said they filled DEF tank at the 50k service. Also, there aren't any messages telling me that DEF is low or to add more.
Anyone have an idea what this means?
Thanks!
Last edited by slimpee; Dec 3, 2020 at 02:21 PM.
