p0605 ECM code with no accelaration ( SOLVED )
Posted: Mon Nov 24, 2025 12:41 pm
Hello my name is Scott,
Car has zero throttle response. It starts and idles, but the pedal does nothing. MIL is on with P0605 – ECM Internal Control Module.
What’s been done so far:
At this point, I’m looking for any direction — known harness failure points, connector corrosion, maybe a pedal assembly issue that can mimic P0605? Anyone run into this exact combo before?
Any suggestions are appreciated. Thanks in advance!
Stuck Scott
https://newjerseyautoandtruck.com
Update - Removed and cleaned the trans speed sensor.
Car has zero throttle response. It starts and idles, but the pedal does nothing. MIL is on with P0605 – ECM Internal Control Module.
What’s been done so far:
- Replaced ECM with a new unit
Programmed ECM
Replaced throttle body
Followed Nissan’s TSB for chafed wiring under cowl and d/s wiper arm and around the harness
Checked wiring visually and tug-tested—nothing obvious
Verified grounds and powers
At this point, I’m looking for any direction — known harness failure points, connector corrosion, maybe a pedal assembly issue that can mimic P0605? Anyone run into this exact combo before?
Any suggestions are appreciated. Thanks in advance!
Stuck Scott
https://newjerseyautoandtruck.com
Update - Removed and cleaned the trans speed sensor.