![]() ![]() Our manuals contain in-depth procedures that require screen shots of parts, charts and various graphs - as well as detailed steps that guide you through troubleshooting real-world automotive repair issues methodically for a quicker resolution.įor additional information on how to obtain the manuals that these tips come from, please refer to the products page on our website: - you will also find trouble code handbooks as well as DVD's on our more popular subjects. These posted tips are the "simple" tips from our 200-350 page manuals. DTC P0300 (random or multiple cylinder misfire detected).A rough idle or surging during a cruise condition. ![]() Engine stalls after a cold start or during deceleration.In addition, excessive flow will cause any of the following symptoms: There isn't a trouble code for excessive EGR flow, but the condition may set code P0404 because only a stuck open pintle can cause both the excessive flow and the position error. The EGR system monitor allows the PCM to test the function and the exhaust gas flow through the EGR system. Cleaning rarely works or is only a temporary solution, so EGR valve replacement is the best fix. This code is almost always caused by an intermittently sticking EGR pintle. This is the most common linear EGR failure, and it is not a position sensor fault. Other applications require a difference of 15% for 20 seconds. These conditions must be sensed for 13 seconds for the code to set, so it is important to realize that significant intermittent EGR faults can be present without actually setting a code. Exhaust gas recirculation is the dilution of the air/fuel mixture to control amounts of exhaust gas. P0404 will set when the PCM detects at least a 10% difference between the desired EGR position and the actual EGR position. P0404 can set any time the conditions are detected, so the deceleration flow Monitor does not have to be active to detect this fault. General Motors Digital EGR - Position Fault Codes: ![]()
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