P1127

BAT Team

By BAT Team (Contact Me)
Last Updated 2017-01-17
A site with free advice from mechanics.

Trouble CodeFault LocationProbable Cause
P1127 Long Term Fuel Trim B1 System Too Rich (AUDI, VOLKSWAGEN)
Exhaust Not Warm Enough Downstream O2 Sensor Not Tested (FORD, LINCOLN, MERCURY)
Long Term Fuel Trim Error System Rich (HYUNDAI)
ECTS Actuator Power Source Circuit Malfunction (LEXUS)
ETCS Actuator Power Source Circuit Malfunction (TOYOTA)

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Other Manufacturer Specific Definitions for P1127

Exhaust Not Warm Enough Downstream O2 Sensor Not Tested (Ford)
Throttle actuator control (TAC) power source - circuit malfunction (Toyota)
Long term fuel trim, system too rich (Volkswagen)
Long term fuel trim, entire speed/load range, Bank 1 - system too rich (Audi)
Long term fuel trim – system too rich (Hyundai)
Throttle actuator control (TAC) power source- circuit malfunction (Lexus)
Self-test not completed -heated oxygen sensor (H02S), not tested (Lincoln)
Heated oxygen sensor (H02S) – RH or rear bank -front (6 cyl) – heater circuit malfunction (Mazda)
Self-test not completed -heated oxygen sensor(H02S), not tested (Mercury)

BAT Team Discussions for P1127

  • '02 toyota ECTS Actuator Power Source Circuit Malfunction
    I am getting a code, p1127 on a Toyota Sequoia. ECTS Actuator source circut malfuntion. What the heck is this thing and were would I find it and clear up this problem, it will crank with no start and this is the only code. PLease Help ???...