The P0190 trouble code indicates a malfunction in the Fuel Rail Pressure Sensor (FRP) circuit.

The fuel rail pressure sensor measures the fuel pressure inside the fuel rail and sends this information to the engine control module (ECM).

The P0118 trouble code indicates that the Engine Coolant Temperature (ECT) sensor is sending a higher-than-expected voltage signal to the engine control module (ECM).

The P0115 trouble code indicates a malfunction in the Engine Coolant Temperature (ECT) sensor circuit.

The ECT sensor measures the temperature of the engine coolant and sends this information to the engine control module (ECM).

The P0113 trouble code indicates that the Intake Air Temperature (IAT) sensor is sending a signal that is higher than the expected voltage range.

The IAT sensor measures the temperature of the air entering the engine. This information helps the engine control module (ECM) adjust the fuel mixture and ignition timing.

The P2111 trouble code indicates that the electronic throttle actuator is stuck in the open position.

Modern vehicles use an electronic throttle control system (drive-by-wire) instead of a traditional throttle cable. The engine control module (ECM) controls the throttle plate using an electric motor inside the throttle body.

When the ECM detects that the throttle plate remains open when it should be closing, it stores the code:

P2111 — Throttle Actuator Control System Stuck Open.

This issue can cause uncontrolled engine speed, reduced power mode, or serious drivability problems.

The P2101 trouble code indicates a problem with the Throttle Actuator Control (TAC) motor in the electronic throttle body.

Modern vehicles use a drive-by-wire throttle system, meaning the accelerator pedal no longer directly controls the throttle with a cable. Instead, the engine control module (ECM) uses an electric motor to open and close the throttle plate.

When the ECM detects that the throttle actuator motor is not responding correctly or operating outside the expected range, it stores the code:

P2101 — Throttle Actuator Control Motor Range/Performance.

This issue can cause reduced engine power or limp mode, making the vehicle difficult to drive.

The P0606 trouble code indicates a serious problem with the Engine Control Module (ECM) or Powertrain Control Module (PCM).

The P0191 trouble code indicates a problem with the Fuel Rail Pressure Sensor (FRP) signal or performance.

This sensor monitors the fuel pressure inside the fuel rail and sends data to the engine control module (ECM). The ECU uses this information to control fuel injection and engine performance.

When the ECU detects that the fuel pressure signal is outside the expected range or inconsistent, it triggers the code:

P0191 — Fuel Rail Pressure Sensor Range/Performance Problem.

This issue can affect engine power, fuel delivery, and overall drivability.

The P0221 trouble code indicates a problem with the Throttle Position Sensor (TPS) circuit range or performance.

Modern vehicles use electronic throttle control systems to regulate engine airflow. The throttle position sensor tells the engine control module (ECM) how far the throttle plate is open.

When the ECM detects that the TPS signal is outside the expected operating range or behaving inconsistently, it stores the code:

P0221 — Throttle Position Sensor Range/Performance Problem.

If ignored, this issue can lead to poor throttle response, reduced engine power, or limp mode activation.

The P0122 trouble code indicates that the engine control module (ECM) has detected a low voltage signal from the Throttle Position Sensor (TPS).

The TPS monitors the position of the throttle plate and tells the engine computer how much the driver is pressing the accelerator.

When the signal voltage drops below the expected range, the ECU stores the code:

P0122 — Throttle Position Sensor Circuit Low Input.

This issue can affect engine performance, throttle response, and acceleration.