Denso ECU Guides
Straight answers about Denso Gen 4 files, common fault codes and flashing a modified file safely.
Denso Gen 4 DTC Off for Toyota & Lexus ECUs
How DTC removal works for Denso Gen 4 files, what to send us and what to do with the file you get back.
Read guideP20EE: SCR NOx Catalyst Efficiency Below Threshold (Bank 1)
What P20EE means, what usually causes it and how DTC off works for Denso ECU files.
Read guideDPF Codes P2002 and P2463: Meaning, Causes and DTC Off
What the common DPF codes mean, why they appear and how DTC off works for Denso ECU files.
Read guideEGR Codes P0400, P0401 and P0403: Meaning, Causes and DTC Off
What the common EGR codes mean, typical causes and how DTC off works for Denso ECU files.
Read guideHow to Flash a Modified Denso ECU File: Safety Checklist
A short checklist: checksum, backups, stable power and what to check after writing.
Read guideModified files are intended exclusively for competition and off-road vehicles. Use on public roads may violate local regulations and is the user's responsibility.