P2BAE – NOx Exceedance – NOx Control Monitoring System

P2BAE Possible Causes

  • Faulty NOx sensors
  • NOx sensor wiring harness is open or short-circuited
  • Poor electrical connection in the NOx sensor circuit
  • Diesel Particulate Filter (DPF)

How to Fix P2BAE Code

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

Possible Symptoms

Check Engine Light illuminated (or Service Engine Soon warning light)

P2BAE Meaning

The Selective Catalytic Reduction system reduces nitrogen oxide (NOx) emissions by injecting a measured amount of diesel exhaust fluid or reductant into the exhaust gas stream entering the Diesel Particulate Filter (DPF). In the Selective Catalytic Reduction catalyst, the reductant reacts with NOx to form nitrogen, carbon dioxide, and water vapor. The upstream and downstream NOx sensors provide the Engine Control Module (ECM) with NOx levels from the engine output and exhaust output.

The ECM uses the 2 NOx sensors to control exhaust NOx levels. The NOx sensor measures the amount of NOx and oxygen in the exhaust system. The first NOx sensor is located at the turbocharger outlet and monitors the engine’s NOx emissions. The second NOx sensor is located in the DPF and monitors the NOx levels exiting the DPF. The ECM varies the amount of reductant added by adjusting the reductant injector duty cycle in response to changes in the engine’s exhaust NOx levels.

P1228 BUICK – Cylinder 3 Injector Circuit Intermittent

P1228 BUICK Possible Causes

  • Faulty fuel injector 3
  • Fuel injector 3 harness is open or shorted
  • Poor electrical connection in fuel injector 3 circuit

How to Fix Code P1228 BUICK?

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)

P1228 BUICK Meaning

Cylinder 3 injector circuit intermittent is the generic description for code P1228 Buick, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the OBDII P1228 Buick code.

P1228 CADILLAC – Cylinder 3 Injector Circuit Intermittent

P1228 CADILLAC Possible Causes

  • Faulty fuel injector 3
  • Fuel injector 3 harness is open or shorted
  • Poor electrical connection in fuel injector 3 circuit

How to Fix Code P1228 CADILLAC?

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)

P1228 CADILLAC Meaning

Injector Circuit Cylinder 3 Intermittent is the generic description for code P1228 Cadillac, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the OBDII P1228 Cadillac code.

P1228 CHEVROLET – Cylinder 3 Injector Circuit Intermittent

 

P1228 CHEVROLET Possible Causes

  • Faulty fuel injector 3
  • Fuel injector 3 harness is open or shorted
  • Poor electrical connection in fuel injector 3 circuit
 

How to Fix Code P1228 CHEVROLET?

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)
 

P1228 CHEVROLET Meaning

Injector Circuit Cylinder 3 Intermittent is the generic description for Chevrolet code P1228, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about the Chevrolet P1228 OBDII code.

P1228 FORD – Wastegate Failed Open Under Pressure

P1228 FORD Possible Causes

  • Faulty EGR valve
  • Faulty MAF sensor
  • Faulty SIP sensor
  • Compressor bypass actuator stuck in closed position
  • Faulty compressor

How to Fix P1228 FORD 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.

Technical Notes

Indicates that the boost pressure is continuously lower than desired

Possible Symptoms

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

P1228 FORD Meaning

Wastegate failed open under pressure is the generic description for P1228 Ford code, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the P1228 Ford OBDII code.

P1228 GMC – Cylinder 3 Injector Circuit Intermittent

P1228 GMC Possible Causes

  • Faulty fuel injector 3
  • Fuel injector 3 harness is open or shorted
  • Poor electrical connection in fuel injector 3 circuit

How is GMC P1228 Code Repaired?

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)

P1228 GMC Meaning

Cylinder 3 Injector Circuit Intermittent is the generic description for GMC P1228 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about GMC P1228 OBDII code.

P1228 INFINITI – High Input of Accelerator Pedal Position Sensor 2 Circuit

P1228 INFINITI Possible Causes

  • Faulty Accelerator Pedal Position (APP) Sensor
  • Accelerator Pedal Position (APP) Sensor Harness is Open or Shorted
  • Poor Electrical Connection in the Accelerator Pedal Position (APP) Sensor Circuit

How to Fix Code P1228 INFINITI?

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?

An excessively high voltage from the Accelerator Pedal Position (APP) Sensor 2 is sent to the Engine Control Module (ECM).

Possible Symptoms

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

P1228 INFINITI Meaning

The Accelerator Pedal Position (APP) Sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the throttle position and sends a signal to the Engine Control Module (ECM).
The Accelerator Pedal Position Sensor has two sensors. These sensors are a type of potentiometer that convert the accelerator pedal position into an output voltage and send the voltage signal to the ECM.
Additionally, these sensors detect the opening and closing speed of the accelerator pedal and transmit the voltage signals to the ECM. The ECM evaluates the current opening angle of the accelerator pedal from these signals and controls the throttle actuator motor based on these signals.
The idle position of the accelerator pedal is determined by the ECM receiving the signal from the Accelerator Pedal Position Sensor. The ECM uses this signal for engine operation, such as fuel cut-off.

P1228 NISSAN – High Input of Accelerator Pedal Position Sensor 2 Circuit

P1228 NISSAN Possible Causes

  • Faulty Accelerator Pedal Position (APP) Sensor
  • Accelerator Pedal Position (APP) Sensor Harness is Open or Shorted
  • Poor Electrical Connection in the Accelerator Pedal Position (APP) Sensor Circuit
 

How to Fix Code P1228 NISSAN?

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?

An excessively high voltage from the Accelerator Pedal Position (APP) Sensor 2 is sent to the Engine Control Module (ECM).

Possible Symptoms

  • Engine Light On (or Service Engine Soon Warning Light)
 

P1228 NISSAN Meaning

The Accelerator Pedal Position (APP) Sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM).
The Accelerator Pedal Position Sensor has two sensors. These sensors are a type of potentiometer that convert the accelerator pedal position into an output voltage and send the voltage signal to the ECM.
Additionally, these sensors detect the opening and closing speed of the accelerator pedal and transmit the voltage signals to the ECM. The ECM evaluates the current accelerator pedal opening angle from these signals and controls the throttle actuator motor based on these signals.
The idle position of the accelerator pedal is determined by the ECM receiving the signal from the Accelerator Pedal Position Sensor. The ECM uses this signal for engine operation, such as fuel cut-off.

P1228 TOYOTA – Fuel Pump Malfunction

❓ Meaning of Code P1228

The code P1228 indicates a problem related to the fuel pump of your Toyota. This pump is responsible for moving fuel from the tank to the engine, where it is mixed with air to create power through the spark from the ignition plugs.

When this code is triggered, it signals a malfunction in the operation of the fuel pump. This can lead to abnormal engine operation, which activates the check engine light or the service engine soon light (SES).

⚠️ Possible Symptoms

When code P1228 is present, you may observe the following symptoms:

  • Check engine light on
  • Service engine soon light on

These indicators suggest that the fuel pump is not functioning properly and may affect the overall performance of the vehicle.

🔧 Possible Causes

Potential causes of code P1228 include:

  1. Faulty fuel pump: The pump itself may be worn out or failed.
  2. Defective fuel pump wiring harness: Broken, corroded, or disconnected wires can disrupt the fuel supply.
  3. Faulty suction control valve or SCV: The suction control valve may be malfunctioning, affecting fuel pressure.
  4. Clogged fuel injectors: If the injectors are blocked, fuel will not be properly injected into the engine.

🛠️ How to Fix Code P1228

To resolve code P1228, follow these diagnostic and repair steps:

  1. Check possible causes:
    • Visually inspect the fuel pump wiring harness and connectors.
    • Look for damaged components and check the connector pins for any breakage, corrosion, or poor contact.
  2. Test the fuel pump:
    • If the wiring harness and connectors are in good condition, test the fuel pump to verify if it is functioning correctly.
  3. Check the suction control valve (SCV):
    • If the pump is working well but the problem persists, test the suction control valve to check if it is defective.
  4. Inspect the fuel injectors:
    • Another issue may come from the fuel injectors. Check that they are not clogged and clean them if necessary.

✅ Conclusion

Code P1228 indicates a problem with the fuel pump or related components in a Toyota vehicle. It is important to first check the wiring harnesses and connectors, then test the pump and other components such as the control valve and injectors. Do not ignore this code, as prolonged fuel pump malfunction can lead to more serious engine failure.

P1228 VOLKSWAGEN – Cylinder 4 Injector Circuit Short to Ground

P1228 VOLKSWAGEN Possible Causes

  • Faulty fuel injector
  • Fuel injector harness is open or shorted
  • Poor electrical connection in the fuel injector circuit

How to Fix Code P1228 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.

Technical Notes

If the code is combined with other fuel injector codes (P1225, P1226, P1227, P1229, P1230), the issue might be the fuel pump relay.

Possible Symptoms

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

P1228 VOLKSWAGEN Meaning

Cylinder 4 Injector Circuit Shorted to Ground is the generic description for Volkswagen code P1228, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have further information on Volkswagen OBDII code P1228.