P1656
OCV Circuit Malfunction
2002-2010 Lexus SC 430 4.3L V8 🇩🇪
Moderate SeverityPowertrain
Description
The ECM detected a fault in the Oil Control Valve circuit for the VVT system.
Symptoms
- CEL
- Rough idle
- Poor performance
- Reduced power
- Engine noise
Common Causes
- Faulty OCV
- Damaged wiring
- Low oil pressure
- Dirty oil
Diagnostic Steps
- Test OCV resistance
- Check oil level/condition
- Inspect wiring
- Command OCV with scan tool
Repair Notes
Replace OCV. Change oil if dirty.
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1656 on Other Vehicles
Common Questions
What does code P1656 mean on a 2002-2010 Lexus SC 430?
P1656 stands for "OCV Circuit Malfunction". The ECM detected a fault in the Oil Control Valve circuit for the VVT system.
What are the symptoms of P1656 on a Lexus SC 430?
Common symptoms of P1656 include: CEL, Rough idle, Poor performance, Reduced power, Engine noise.
What causes P1656 on a 2002-2010 Lexus SC 430?
Common causes of P1656 include: Faulty OCV, Damaged wiring, Low oil pressure, Dirty oil.