P1129 TOYOTA Possible Causes

• Faulty Electronic Throttle Control System (ETCS) actuator
• Electronic Throttle Control System (ETCS) actuator harness is open or shorted
• Electronic Throttle Control System (ETCS) actuator circuit Poor electrical connection

How to Fix Code P1129 TOYOTA?

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

When is the Code Detected?

The P1129 code is set when the throttle opening angle continues to vary significantly from the target throttle opening angle.

Possible Symptoms

• Check Engine Light on (or Service Engine Soon Warning Light)

P1129 TOYOTA Meaning

The Electronic Throttle Control System (ETCS) consists of the throttle motor to actuate the throttle valve, the electromagnetic clutch to connect the throttle motor to the throttle valve, the throttle position sensor to detect the throttle valve opening angle, the accelerator pedal position sensor to detect the accelerator pedal position, the Engine Control Module (ECM) to control the ETCS, and the single throttle valve body.
The ECM controls the throttle motor to make the throttle valve opening angle properly under responsive driving conditions.
The throttle position sensor, which is mounted on the throttle body, detects the throttle valve opening angle and provides feedback to the ECM to control the throttle motor.
In case of ETCS malfunction, the ECM cuts power to the throttle motor and the magnetic clutch, and the throttle valve is fully closed by the return spring.
However, the throttle valve opening angle can be controlled by the accelerator pedal via the throttle cable.

P1129 VOLKSWAGEN Possible Causes

• Faulty mass air flow (MAF) sensor
• High fuel pressure
• Purge canister solenoid stuck open
• Faulty Bank 1 HO2S

How to Fix P1129 VOLKSWAGEN Code?

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

Possible Symptoms

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

P1129 VOLKSWAGEN Meaning

Long term fuel trim system B2 too rich is the generic description for Volkswagen P1129 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Volkswagen P1129 OBDII code.

P112A Possible Causes

• Low engine coolant level
• Faulty thermostat
• Faulty engine coolant temperature sensor
• Engine coolant temperature sensor harness is open or shorted
• Poor electrical connection in engine coolant temperature sensor circuit

How is code P112A repaired?

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

Possible Symptoms

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

P112A Meaning

The engine control module (ECM) monitors the signal from the engine coolant temperature sensor. The ECM sets the OBDII code when the engine coolant temperature sensor is outside factory specifications.

P112A BMW Possible Causes

• Low engine coolant level
• Faulty thermostat
• Faulty engine coolant temperature sensor
• Engine coolant temperature sensor harness is open or shorted
• Poor electrical connection in the engine coolant temperature sensor circuit

How to Fix BMW P112A Code?

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

Possible Symptoms

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

P112A BMW Meaning

The Engine Control Module (ECM) monitors the signal from the engine coolant temperature sensor. The ECM sets the OBDII code when the engine coolant temperature sensor is outside factory specifications.

P112A MINI Possible Causes

• Low engine coolant level
• Faulty thermostat
• Faulty engine coolant temperature sensor
• Engine coolant temperature sensor harness is open or shorted
• Poor electrical connection in engine coolant temperature sensor circuit

How to Fix P112A MINI Code?

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

Possible Symptoms

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

P112A MINI Meaning

The engine control module (ECM) monitors the signal from the engine coolant temperature sensor. The ECM sets the OBDII code when the engine coolant temperature sensor is outside factory specifications.

P112B Possible Causes

• Low engine coolant level
• Faulty thermostat
• Faulty engine coolant temperature sensor
• Engine coolant temperature sensor harness is open or shorted
• Poor electrical connection in the engine coolant temperature sensor circuit

How to Fix Code P112B?

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

Possible Symptoms

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

P112B Meaning

The engine control module (ECM) monitors the signal from the engine coolant temperature sensor. The ECM sets the OBDII code when the engine coolant temperature sensor is outside factory specifications.

P112B BMW Possible Causes

• Low engine coolant level
• Faulty thermostat
• Faulty engine coolant temperature sensor
• Engine coolant temperature sensor harness is open or shorted
• Poor electrical connection in engine coolant temperature sensor circuit

How to Fix BMW P112B Code?

Start by checking the “possible causes” listed above. Visually inspect the related 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)

P112B BMW Meaning

The Engine Control Module (ECM) monitors the signal from the engine coolant temperature sensor. The ECM sets the OBDII code when the engine coolant temperature sensor is outside factory specifications.

P112B BUICK Possible Causes

• Faulty intake air temperature sensor
• Intake air temperature sensor harness is open or shorted
• Poor electrical connection in the intake air temperature sensor circuit

How to Fix P112B BUICK 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.

Possible Symptoms

• Check Engine Light on (or Service Engine Soon Warning Light)

P112B BUICK Meaning

The Intake Air Temperature (IAT) sensor contains a semiconductor device that changes resistance based on temperature (a thermistor). The IAT sensor is located in the air intake passage of the engine’s air intake system. The IAT sensor has a signal circuit and a ground circuit. The Powertrain Control Module (PCM) monitors the Intake Air Temperature sensor signal. The PCM sets the OBDII code when the Intake Air Temperature sensor signal is outside factory specifications.

P112B CADILLAC Possible Causes

• Faulty intake air temperature sensor
• Intake air temperature sensor harness is open or shorted
• Poor electrical connection in the intake air temperature sensor circuit

How to Fix P112B CADILLAC 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.

Possible Symptoms

• Check Engine Light on (or Service Engine Soon warning light)

P112B CADILLAC Meaning

The Intake Air Temperature (IAT) sensor contains a semiconductor device that changes resistance based on temperature (a thermistor). The IAT sensor is located in the air intake passage of the engine’s air intake system. The IAT sensor has a signal circuit and a ground circuit. The Powertrain Control Module (PCM) monitors the Intake Air Temperature sensor signal. The PCM sets the OBDII code when the Intake Air Temperature sensor signal is outside factory specifications.

P112B CHEVROLET Possible Causes

• Faulty intake air temperature sensor
• Intake air temperature sensor harness is open or shorted
• Poor electrical connection in the intake air temperature sensor circuit

How to Fix P112B CHEVROLET Code?

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

Possible Symptoms

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

P112B CHEVROLET Meaning

The intake air temperature (IAT) sensor contains a semiconductor device that changes resistance based on temperature (a thermistor). The IAT sensor is located in the air intake passage of the engine’s air intake system. The IAT sensor has a signal circuit and a ground circuit. The Powertrain Control Module (PCM) monitors the intake air temperature sensor signal. The PCM sets the OBDII code when the intake air temperature sensor signal is outside factory specifications.