What is code P20e9 for?

What is your question?

Engine light on after replacing DEF Heater and Pump OBCII gave code P20e9 but I can't find the explination of the code. Not a full time mechanic just an 74 year old golf pro who likes to work on his OLD car. :) Thanks

What makes this problem better or worse?

How long has your 2009 Mercedes-Benz ML320 had this problem?

couple of days

Visitor

in Arroyo Grande CA

Feb 14, 2021

1 Reply

What are the best Mercedes-Benz repair shops?

RepairPal Certified shops can diagnose and repair your 2009 Mercedes-Benz ML320. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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1 Reply

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See All 27 Locations

Tuffy Tire & Auto Service Center - Grandview

4.7

(85)

2.39 mi

1524 W 5th Ave

Columbus, OH

Closed

Opens 8:00 AM Tue

Call