P1701moderate severityPowertrain
Fuel Trim A/T Related
on 2021 Nissan Leaf Electric 40kWh · FWD
What this code means
Fuel trim signal issue between engine and transmission control systems.
Symptoms
- CEL
- Poor shift quality
- Engine flare during shifts
- Rough transitions
Common causes
- Communication fault
- Fuel trim out of range
- Faulty sensor data
- Faulty ECM or TCM
Diagnostic steps
- Monitor fuel trims
- Test communication
- Check sensors
- Compare ECM/TCM data
Repair notes
Repair communication or sensor issue.
Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0071
Ambient Air Temperature Sensor Range/Performance
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0116
ECT Sensor 1 Circuit Range/Performance
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control