P0401 Diagnostic Trouble Code Discussion for August 2025
Insufficient EGR Flow Detected
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| Help Request | Posted | |
| 1999 Toyota Camry LE 2.2L MIL Lamp on VIN: JT2BG22K8X P0401: EGR System Insufficient Flow Detected. Test drove vehicle after parts replaced and found check engine light came back on. Freeze frame shows code sets at around 2200 rpm. Vacuum supply to the egr valve has been verified and was reading almost 18inHg around the 2500 rpm. Im suspecting the exhaus... |
August 20, 2025 | |
| 1999 Toyota Camry LE 2.2L MIL Lamp on VIN: JT2BG22K8X P0401: EGR System Insufficient Flow Detected. Test drove vehicle after parts replaced and found check engine light came back on. Freeze frame shows code sets at around 2200 rpm. Vacuum supply to the egr valve has been verified and was reading almost 18inHg around the 2500 rpm. Im suspecting the exhaus... |
August 21, 2025 |
