Question about Cars & Trucks
Can a car run with a EGR valve blocked off
Yes it can run with it blocked off the only issue of concern is if the engine pings (rattles) under load this causes piston skirt damage or just burns a hole through the top of the piston.
Posted on Apr 19, 2014
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Posted on Jan 02, 2017
Tips for a great answer:
May 06, 2012 | 1996 Ford Explorer
May 05, 2012 | Toyota Avalon Cars & Trucks
DTC P1400 - Differential
Pressure Feedback Electronic (DPFE) sensor signal was below 0.2 volts.
Enabling conditions: Run engine off or running self tests to check this
Blocking Action: This code can block the following monitors: Fuel Control, O2 monitor, catalyst, misfire, and EGR monitor.
Run the engine off and running self tests. If the code does not show
up, it is an intermittent problem. Check for 5 volt reference that is
low, damaged sensor or a short to ground in the signal wiring. Probes
use an EGR position sensor signal which can be low because of a worn EGR
pintle that drops too low in the EGR valve or for a warped EGR valve
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