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P0401 Diagnostic Trouble Code Discussion for June 2010

Insufficient EGR Flow Detected


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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1999 Toyota Camry LE 2.2L MIL Lamp on VIN: 4T1BG22K8X
P0401: EGR System Insufficient Flow Detected. After confirming all EGR componants are working, the customer stated that the motor came from Japan. My question, Is it possible to drill the rest of the port with the head in the car or will it need to be removed? Next, it looks like if I drill from where th...
June 07, 2010
2004 Chevrolet Silverado 3500 6.6L No Start, Stall
P0401: EGR Flow Insufficient Detected. The problem is an intermittant crank/no start after a hot soak, always starts after a couple of hours. On the way back to drop off the customer at his house it started loosing power and surging. After dropping him off I hooked up the scanner and headed back t...
June 14, 2010
2000 Honda Odyssey EX 3.5L MIL Lamp on VIN: 2HKRL1860Y
P0401: EGR System Insufficient Flow Detected. Customer complained his TCS light comes on- Honda told him to ignore MIL (!). I have tried scanning with different tools, tried Identifix- finally got a code 31 in TCS/ABS, identified as communication failure between TCS and PCM. also got old codes from ABS, d...
June 23, 2010
2003 Volkswagen Beetle GL 1.9L MIL Lamp on VIN: 3VWCP21C73
P0401: low egr flow. This car is setting the mil for low egr flow. We remove the intake and had it cleaned,did he did not send the egr cooler as it looked clean. After putting all back together had a whistling noise but no engine light. After check found he had let the exhaust gas...
June 23, 2010
1999 Toyota Camry LE 2.2L MIL Lamp on VIN: 4T1BG22K8X
P0401: EGR System Insufficient Flow Detected. After confirming all EGR componants are working, the customer stated that the motor came from Japan. My question, Is it possible to drill the rest of the port with the head in the car or will it need to be removed? Next, it looks like if I drill from where th...
June 07, 2010
2004 Chevrolet Silverado 3500 6.6L No Start, Stall
P0401: EGR Flow Insufficient Detected. The problem is an intermittant crank/no start after a hot soak, always starts after a couple of hours. On the way back to drop off the customer at his house it started loosing power and surging. After dropping him off I hooked up the scanner and headed back t...
June 14, 2010
2000 Honda Odyssey EX 3.5L MIL Lamp on VIN: 2HKRL1860Y
P0401: EGR System Insufficient Flow Detected. Customer complained his TCS light comes on- Honda told him to ignore MIL (!). I have tried scanning with different tools, tried Identifix- finally got a code 31 in TCS/ABS, identified as communication failure between TCS and PCM. also got old codes from ABS, d...
June 23, 2010
2003 Volkswagen Beetle GL 1.9L MIL Lamp on VIN: 3VWCP21C73
P0401: low egr flow. This car is setting the mil for low egr flow. We remove the intake and had it cleaned,did he did not send the egr cooler as it looked clean. After putting all back together had a whistling noise but no engine light. After check found he had let the exhaust gas...
June 23, 2010