P1550
TCC Solenoid Valve
2002-2004 Infiniti I35 3.5L V6
Moderate SeverityPowertrain
Description
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.
Other Powertrain Codes
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P1550 on Other Vehicles
Common Questions
What does code P1550 mean on a 2002-2004 Infiniti I35?
P1550 stands for "TCC Solenoid Valve". Fault in torque converter clutch solenoid for converter lockup.
What are the symptoms of P1550 on a Infiniti I35?
Common symptoms of P1550 include: CEL, No TCC lockup, Poor highway fuel economy, Shudder at cruise, RPM flare.
What causes P1550 on a 2002-2004 Infiniti I35?
Common causes of P1550 include: Faulty TCC solenoid, Damaged wiring, Contaminated fluid, Faulty TCM.