P1126 INFINITI – Open Throttle Control Motor Relay Circuit

P1126 INFINITI Possible Causes

• Faulty throttle control motor relay
• Throttle control motor relay harness is open or shorted
• Poor electrical connection in the throttle control motor relay circuit

How to Fix P1126 INFINITI Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding cable harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

 

 

When is the Code Detected?

The Engine Control Module (ECM) detects that a voltage from the power supply for the throttle control motor is excessively low.

Possible Symptoms

• Engine light on (or engine service warning light soon)

P1126 INFINITI Meaning

 

The throttle control motor power supply is provided to the Engine Control Module (ECM) via the throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to the throttle control motor relay and battery voltage is supplied to the ECM. When the ignition switch is OFF, the ECM sends an OFF signal to the throttle control motor relay and battery voltage is not supplied to the ECM.

P1126 INFINITI – Thermostat Function

P1126 INFINITI Possible Causes

• Low engine coolant level
• Faulty thermostat
• Thermostat seal leakage
• Engine coolant temperature sensor

When is the code detected?

The P1126 code is detected when the engine coolant temperature does not reach the specified temperature even though the engine has run for a sufficient amount of time.

Possible Symptoms

• Check engine light on (or service engine soon warning light)

P1126 INFINITI Meaning

The engine coolant temperature has not increased enough to open the thermostat even though the engine has run long enough. This is due to a leak in the seal or a stuck open thermostat.

P1126 LEXUS – Magnetic Clutch Circuit Malfunction

P1126 LEXUS Possible Causes

• Faulty magnetic clutch
• Magnetic clutch harness is open or shorted
• Poor electrical connection in the magnetic clutch circuit

How to Fix P1126 LEXUS Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding cable harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Engine light on (or engine service warning light soon)

P1126 LEXUS Meaning

The magnetic clutch is mounted between the throttle motor and the valve, and it connects the throttle motor to the throttle valve.
Therefore, the throttle motor opens and closes the throttle valve via the magnetic clutch.
In case of malfunction in the electronic throttle control system, the magnetic clutch separates the throttle motor from the throttle valve so as not to operate the throttle valve by the throttle motor.
If the P1126 code is stored, the engine control module (ECM) cuts off power to the throttle motor and magnetic clutch, and the throttle valve is completely closed by the return spring.
However, the throttle valve opening angle can be controlled by the accelerator pedal via the accelerator cable.

P1126 NISSAN – Throttle Actuator Control Motor Relay Circuit Open

• Faulty throttle actuator control motor relay
• Throttle actuator control motor relay harness is open or shorted
• Poor electrical connection in the throttle actuator control motor relay circuit

How to Fix Code P1126 NISSAN?

Start by checking the “possible causes” listed above. Visually inspect the corresponding cable harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Technical Notes

When is the code detected?

The Engine Control Module (ECM) detects that a voltage from the power supply for the throttle actuator control motor is excessively low.

Possible Symptoms

• Engine light on (or engine warning light soon on)

The power supply for the throttle actuator control motor is provided to the Engine Control Module (ECM) via the throttle actuator control motor relay. The throttle actuator control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to the throttle actuator control motor relay and battery voltage is supplied to the ECM. When the ignition switch is OFF, the ECM sends an OFF signal to the throttle actuator control motor relay and battery voltage is not supplied to the ECM.

Throttle actuator control motor relay circuit open for Nissan vehicles other than 2000-2001 models

P1126 NISSAN – Thermostat Function

P1126 NISSAN Possible Causes

• Low engine coolant level
• Faulty thermostat
• Leak in thermostat sealing part
• Engine coolant temperature sensor

How to Fix P1126 NISSAN Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Technical Notes

If no coolant leak is present, replacing the thermostat usually resolves the issue.

When is the Code Detected?

The P1126 code is detected when the engine coolant temperature does not reach the specified temperature even though the engine has run long enough.

Symptoms

possible

• Engine light on (or engine service warning light soon)

The engine coolant temperature has not risen enough to open the thermostat even though the engine has run long enough. This is due to a leak in the seal or a stuck open thermostat.

P1126 TOYOTA – Magnetic Clutch Circuit Malfunction

P1126 TOYOTA Possible Causes

• Faulty magnetic clutch
• Magnetic clutch harness is open or shorted
• Poor electrical connection in the magnetic clutch circuit

How to Fix Code P1126 TOYOTA?

Start by checking the “possible causes” listed above. Visually inspect the corresponding cable harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Engine light on (or engine service warning light soon)

P1126 TOYOTA Meaning

The magnetic clutch is mounted between the throttle motor and the valve, and it connects the throttle motor to the throttle valve.
Therefore, the throttle motor opens and closes the throttle valve via the magnetic clutch.
In case of malfunction in the electronic throttle control system, the magnetic clutch separates the throttle motor from the throttle valve so as not to operate the throttle valve by the throttle motor.
If code P1126 is stored, the engine control module (ECM) cuts off power to the throttle motor and the magnetic clutch, and the throttle valve is completely closed by the return spring.
However, the throttle valve opening angle can be controlled by the accelerator pedal via the accelerator cable.

P1126 VOLKSWAGEN Possible Causes

• Faulty HO2S
• Faulty mass air flow sensor
• High fuel pressure
• Purge canister solenoid stuck open
• HO2S harness is open or shorted
• Poor electrical connection in HO2S circuit

How to Fix VOLKSWAGEN P1126 Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

What is the cost to diagnose VOLKSWAGEN P1126 code

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1126 VOLKSWAGEN Meaning

Long term fuel trim, bank 2 system too lean is the generic description for Volkswagen P1126 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Volkswagen P1126 OBDII code.

P1127 Possible Causes

• Faulty O2 sensor heaters
• O2 sensor heater element circuit is open or shorted
• Poor electrical connection in the O2 sensor heater circuit

How to fix code P1127?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Check engine light on (or service engine soon warning light)

P1127 Meaning

The Heated Oxygen Sensor (HO2S) monitor uses an exhaust temperature model to determine when the HO2S heaters are activated. The test fails when the inferred exhaust temperature is below a minimum calibrated value.

Information for specific brands

• P1127 AUDI Long term fuel trim system B1 too rich
• P1127 FORD Exhaust not hot enough Downstream O2 sensor not tested
• P1127 HYUNDAI Long term fuel trim system rich error
• P1127 LEXUS ECTS actuator power source circuit malfunction
• P1127 LINCOLN Exhaust not hot enough Downstream O2 sensor not tested
• P1127 MERCURY Exhaust not hot enough Downstream O2 sensor not tested
• P1127 TOYOTA ETCS actuator power source circuit malfunction
• P1127 VOLKSWAGEN Long term fuel trim system B1 too rich

P1127 1997 FORD F150 Possible Causes

• Faulty O2 sensor heaters
• O2 sensor heater element circuit open or shorted
• Poor electrical connection in O2 sensor heater circuit

How to Fix Code P1127 1997 FORD F150?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Check Engine Light on (or service engine soon warning light)

P1127 1997 FORD F150 Meaning

The Heated Oxygen Sensor (HO2S) monitor uses an exhaust temperature model to determine when the HO2S heaters are activated. The test fails when the inferred exhaust temperature is below a minimum calibrated value.