ETCS Actuator Power Source Circuit
2014-2014 Toyota 4Runner 4.0L V6
The 2014 Toyota 4Runner is equipped with a 4.0L V6 engine. Below you'll find detailed p1127 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The power source voltage for the ETCS actuator is abnormal.
Symptoms
- CEL
- Reduced power
- Throttle unresponsive
- Limp mode
Common Causes
- Low battery voltage
- Poor ground
- Damaged wiring
- Blown ETCS fuse
Diagnostic Steps
- Check battery voltage
- Test ground connections
- Inspect fuse
- Check wiring
Repair Notes
Repair power supply or replace fuse.
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
P1127 on Other Vehicles
Common Questions
What does code P1127 mean on a 2014-2014 Toyota 4Runner?
P1127 stands for "ETCS Actuator Power Source Circuit". The power source voltage for the ETCS actuator is abnormal.
What are the symptoms of P1127 on a Toyota 4Runner?
Common symptoms of P1127 include: CEL, Reduced power, Throttle unresponsive, Limp mode.
What causes P1127 on a 2014-2014 Toyota 4Runner?
Common causes of P1127 include: Low battery voltage, Poor ground, Damaged wiring, Blown ETCS fuse.
Last updated: March 2026
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