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P0401 Diagnostic Trouble Code Discussion for April 2010

Insufficient EGR Flow Detected

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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1997 Toyota Camry LE 2.2L Poor Idle Quality, Surge, Cuts out, Stall VIN: 4T1BG22KOV
P0401: EGR System Insufficient Flow Detected. Ok here goes anothe pain in the %#@! Car came in a few days ago with CEL on for egr insufficient flow. Replaced EGR vacuum modulator light gone and EGR apears to be working corectly. Car comes back a few days later complaing about stalling at trafic light. Whe...
April 15, 2010
1996 Toyota Camry DX 2.2L MIL Lamp on VIN: JT2BG12K6T
P0401: EGR System Insufficient Flow Detected. Thanks in advance for the help. This one came in with above code. We check egr system and all check passed. Also pulled egr off tho lock in intake and my tech ( who is no longer here) said that it did not looked clogged. So we cleared codes and sent on its way...
April 26, 2010