P1189 KIA – Fuel Pressure Monitoring – Regulator Deviation at Excessive Engine Speed

P1189 KIA Possible Causes

  • Faulty fuel filter
  • Faulty injector
  • Faulty electric fuel pump
  • Faulty fuel pressure regulator (FPR)
  • Faulty rail pressure sensor (RPS)
  • Engine control module (ECM)

How to Fix P1189 KIA 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

  • Engine light on (or engine warning light soon)

P1189 KIA Meaning

Fuel pressure monitoring is used to detect fuel problems and leaks in the high-pressure system.
The engine control module (ECM) determines the rail pressure value based on engine operating conditions and controls the fuel pressure regulator to ensure the rail pressure reaches the required value.
The fuel pressure in the fuel line, including pumps and injector, is continuously monitored during engine operation.
If the rail pressure is excessive, the fuel pressure regulator opens and some fuel is returned from the rail to the fuel tank via a collector line. If the rail pressure is too low, the fuel pressure regulator closes.
The fuel pressure regulator closes. the fuel pressure regulator is installed at the rear end of the high-pressure accumulator.
In case of insufficient fuel supply in the fuel line, engine symptoms will occur such as stalling and inability to start.
If monitoring the fuel pressure in the engine’s fuel pressure line generates a threshold value, the ECM judges it as a fault and the P1189 code is set.

P1189 MINI – Fuel control, bank 2 sensor 1

P1189 MINI Possible Causes

  • Intake air leaks
  • Faulty pre-catalytic converter oxygen sensor
  • Misfire
  • Faulty fuel injectors
  • Exhaust gas leaks
  • Poor fuel pressure
  • Lack of fuel
  • Faulty Mass Air Flow (MAF) sensor
  • Poor Positive Crankcase Ventilation (PCV) hose connection

How to Fix MINI Code P1189?

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.

When is the Code Detected?

– The fuel injection system is not working properly.
– The mixture ratio compensation amount is incorrect

Possible Symptoms

  • Engine light on (or engine service warning light soon)
  • Excessive fuel consumption

P1189 MINI Meaning

With the air/fuel mixture ratio self-learning control, the actual mixture ratio can be brought closer to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the deviation between the actual and theoretical ratios.
In cases where the compensation value amount is extremely high (the actual mixture ratio is too lean), the ECM judges the condition as a malfunction of the fuel injection system and illuminates the MIL (trigger detection logic 2).

P1189 VOLKSWAGEN – Short Circuit of Linear O2 Sensor Compensation Resistance to B+

P1189 VOLKSWAGEN Possible Causes

  • Faulty O2 sensor
  • O2 sensor harness is open or shorted
  • Poor electrical connection in the O2 sensor circuit

How to Fix P1189 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

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

P1189 VOLKSWAGEN Meaning

The Engine Control Module (ECM) monitors the compensation resistance of the linear O2 sensor. The ECM sets the OBDII code when the linear O2 sensor’s compensation resistance does not meet factory specifications.

P118A – Sensor 1 Voltage, Bank 3, Air Leak Too Low

P118A Possible Causes

  • Exhaust leaks
  • Faulty oxygen sensor
  • Oxygen sensor harness is open or shorted
  • Poor electrical connection in oxygen sensor circuit

How to Fix Code P118A?

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

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

P118A Meaning

The Engine Control Module (ECM) monitors the oxygen sensor. The ECM sets the OBDII code when the oxygen sensor does not meet factory specifications.

P118A AUDI – Sensor 1 Voltage, Bank 3, Air Leak Too Low

P118A AUDI Possible Causes

  • Exhaust leaks
  • Faulty oxygen sensor
  • Oxygen sensor harness is open or shorted
  • Poor electrical connection in oxygen sensor circuit

How to Fix Code P118A AUDI?

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

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

P118A AUDI Meaning

The Engine Control Module (ECM) monitors the oxygen sensor. The ECM sets the OBDII code when the oxygen sensor does not meet factory specifications.

P118A VOLKSWAGEN – Sensor 1 Voltage, Bank 3, Air Leak Too Low

P118A VOLKSWAGEN Possible Causes

  • Exhaust leaks
  • Faulty oxygen sensor
  • Oxygen sensor harness is open or shorted
  • Poor electrical connection in oxygen sensor circuit

How to Fix Code P118A VOLKSWAGEN?

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

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

P118A VOLKSWAGEN Meaning

The Engine Control Module (ECM) monitors the oxygen sensor. The ECM sets the OBDII code when the oxygen sensor does not meet factory specifications.

P118B – Sensor 2 Voltage, Bank 4, Air Leak Too Low

P118B Possible Causes

  • Exhaust leaks
  • Faulty oxygen sensor
  • Oxygen sensor harness is open or shorted
  • Poor electrical connection in oxygen sensor circuit

How to Fix Code P118B?

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

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

P118B Meaning

The Engine Control Module (ECM) monitors the oxygen sensor. The ECM sets the OBDII code when the oxygen sensor does not meet factory specifications.

P118B AUDI – Sensor 2 Voltage, Bank 4, Air Leak Too Low

P118B AUDI Possible Causes

  • Exhaust leaks
  • Faulty oxygen sensor
  • Oxygen sensor harness is open or shorted
  • Poor electrical connection in oxygen sensor circuit

How to Fix Code P118B AUDI?

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

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

P118B AUDI Meaning

The Engine Control Module (ECM) monitors the oxygen sensor. The ECM sets the OBDII code when the oxygen sensor does not meet factory specifications.

P118B VOLKSWAGEN – Sensor 2 Voltage, Bank 4, Air Leak Too Low

P118B VOLKSWAGEN Possible Causes

  • Exhaust leaks
  • Faulty oxygen sensor
  • Oxygen sensor harness is open or shorted
  • Poor electrical connection in oxygen sensor circuit

How to Fix Code P118B VOLKSWAGEN?

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

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

P118B VOLKSWAGEN Meaning

The Engine Control Module (ECM) monitors the oxygen sensor. The ECM sets the OBDII code when the oxygen sensor does not meet factory specifications.

P1190 – Intake Throttle Actuator Malfunction

P1190 Possible Causes

  • Faulty throttle valve solenoid
  • Throttle valve solenoid wiring harness is open or short-circuited
  • Poor electrical connection in the throttle valve solenoid circuit
  • Faulty engine control module (ECM)

How to Fix Code P1190?

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

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

P1190 Meaning

The actuation of flaps in the intake passage at the cylinder intake valve can be narrowed. This reduces airflow. The flaps in the intake passage are controlled by the intake throttle actuator. The duty cycle calculation for intake passage cut-off can be turned on and off by the intake passage cut-off function switch. If the engine speed and the low idle speed controller demand quantity exceed certain thresholds, the MAF signal must be above a threshold. If not, the “flap stuck closed” error is recognized. If the engine speed and the control duty cycle exceed certain thresholds, the digital intake passage cut-off switch must be activated. If so, the flap stuck open error is recognized. If the throttle actuator is stuck, engine symptoms will occur: engine stalling while running and failure to start.