Auto User Guide

What is P1125 : Engine Error code Causes Explained

What is P1125 : Engine Error code Causes Explained

P1125 Engine Error code

This Guide discusses the P1125 engine problem code, its causes, symptoms, and remedies. This throttle control system error code may compromise engine performance and drivability. Early diagnosis can avoid costly repairs.

How to Identify a DTCs Number

Diagnostic Trouble Code (DTCs) Flowchart

The Diagnostic Trouble Code (DTC) P1125 is typically related to the electronic throttle control system. To identify the DTC number, you need an OBD-II scanner.

Understand, this trouble codes (DTCs) are 5 characters: 1 letter, 4 numbers. P-Powertrain indicates the fault code’s location. Generic or manufacturer-specific codes are indicated by the first digit. The second digit denotes the subsystem (7=transmission). The last two numbers describe the issue.

This error occurs when the Powertrain Control Module (PCM) detects an abnormality in the throttle position sensor or electronic throttle control. It may be triggered by a faulty throttle body, wiring issues, or a failing accelerator pedal position sensor.

Causes of P1125 Code:

What is P1125 Engine Error code Causes Explained 2

  • Faulty Throttle Position Sensor:
    Worn-out components, internal damage, or contamination on the sensor.
  • Throttle Body Problems:
    Dirty/clogged throttle body, mechanical failure, or faulty electronic actuator.
  • ECM (Engine Control Module) Issues:
    ECM software glitch or faulty ECM.
  • Accelerator Pedal Position (APP) Sensor Problems:
    Malfunctioning APP sensor or loose/damaged connections.
  • Vacuum Leaks or Power Supply Issues:
    Leaks around the intake manifold/throttle body, blown fuses/relays, or weak battery.

Risk Level of P1125 Error Code:

What is P1125 Engine Error code Causes Explained 1

A high-risk level means the problem is severe enough to impact engine performance, leading to symptoms like reduced power, rough idling, or even engine stalling.

When facing a P1125 code along with by a “High Risk Level” warning, it’s essential to take immediate action.

Common Car Brands Affected by P1125 Code:

Affected cars by P1125 Engine Error code

The P1125 engine error code is commonly found in the following list.

  1. Land Rover
  2. Citroen
  3. Ford
  4. Peugeot

Video: P1125 Engine Error code

FAQ’s

What is the P1125 Engine Error Code?
The P1125 code indicates a throttle control system malfunction, often related to the throttle position sensor or electronic throttle control.

What Causes the P1125 Error Code?
Common causes include a faulty throttle body, damaged wiring, throttle position sensor failure, or issues with the accelerator pedal position sensor.

What is the Risk Level of the P1125 Error Code?
The risk level is high as it can lead to reduced engine power, erratic acceleration, or even stalling, posing safety concerns while driving.

Which Vehicles Are Affected by the P1125 Code?
The P1125 error commonly affects Land Rover, Citroen, Ford and Peugeot models with electronic throttle control systems.

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