P1550moderate severityPowertrain
TCC Solenoid Valve
on 2021 Nissan Leaf Electric 40kWh · FWD
What this code means
Fault in torque converter clutch solenoid for converter lockup.
Symptoms
- CEL
- No TCC lockup
- Poor highway fuel economy
- Shudder at cruise
- RPM flare
Common causes
- Faulty TCC solenoid
- Damaged wiring
- Contaminated fluid
- Faulty TCM
Diagnostic steps
- Test solenoid resistance
- Check fluid condition
- Inspect connector
- Monitor with scan tool
Repair notes
Replace TCC solenoid.
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