P0401 Diagnostic Trouble Code Discussion for September 2017
Insufficient EGR Flow Detected
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| Help Request | Posted | |
| 1997 Toyota RAV4 2.0L MIL Lamp on VIN: JT3HP10V1V P0401: EGR System Insufficient Flow Detected. P0401- Original diagnosis confirmed that the EGR VSV was bad. It has been replaced. While apart, the EGR valve was checked - operational and clear. The exhaust supply tube was checked - clear. All plumbing to the VSV, modulator and valve has been checked. The ... |
September 05, 2017 | |
| 1997 Toyota RAV4 2.0L MIL Lamp on VIN: JT3HP10V1V P0401: EGR System Insufficient Flow Detected. P0401- Original diagnosis confirmed that the EGR VSV was bad. It has been replaced. While apart, the EGR valve was checked - operational and clear. The exhaust supply tube was checked - clear. All plumbing to the VSV, modulator and valve has been checked. The ... |
September 07, 2017 | |
| 2001 Honda Odyssey EX 3.5L MIL Lamp on VIN: 2HKRL18651 P0401: EGR System Insufficient Flow Detected. I pulled upper intake and took to car wash. Took long 1/8 drill bit and cleaned out the small hole. High pressure wash I could get water to flow through the hole. Put back together and still had code. Mil back on quickly. So new EGR installed. Still code. Pull... |
September 12, 2017 | |
| 2004 Toyota Tacoma 2.7L MIL Lamp on VIN: 5TEWM72N74 P0401: EGR System Insufficient Flow Detected. Applied vacuum by pump to egr valve and vehicle stalled right away. Next went to the ported vacuum source and found NO vacuum for the Egr solenoid (VSV)at the throttle body. Took Throttle body off of vehicle and cleaned out the two small ports with carb clean ... |
September 14, 2017 | |
| 2004 Toyota Tacoma 2.7L MIL Lamp on VIN: 5TEWM72N74 P0401: EGR System Insufficient Flow Detected. Applied vacuum by pump to egr valve and vehicle stalled right away. Next went to the ported vacuum source and found NO vacuum for the Egr solenoid (VSV)at the throttle body. Took Throttle body off of vehicle and cleaned out the two small ports with carb clean ... |
September 15, 2017 |
