• posted by Craig Murray

A Throttle Body Fault indicates that the Engine Control Module (ECM) has detected an abnormal operation of the electronically controlled throttle body or its associated control circuits. The throttle body regulates the amount of air entering the engine in response to accelerator pedal input and ECM commands. Modern MG ZS Gen2 vehicles use an Electronic Throttle Control (ETC) system, also known as drive-by-wire, where the ECM continuously monitors throttle plate position, throttle actuator motor operation, and throttle position sensors. A fault within the throttle body can result in poor engine performance, limited throttle response, reduced-power (limp-home) mode, or a no-start condition. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

An Oxygen Sensor (O₂ Sensor) Fault indicates that the Engine Control Module (ECM) has detected an incorrect, intermittent, slow, or missing signal from one or more oxygen sensors in the exhaust system. Oxygen sensors continuously monitor the oxygen content of the exhaust gases, allowing the ECM to precisely adjust the air-fuel ratio for optimal engine performance, fuel economy, emissions control, and catalytic converter efficiency. Modern MG ZS Gen2 vehicles typically use both upstream (pre-catalytic converter) and downstream (post-catalytic converter) oxygen sensors. A fault affecting either sensor can result in poor engine performance, increased fuel consumption, higher emissions, and catalytic converter-related issues. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

A Mass Air Flow (MAF) Sensor Fault indicates that the Engine Control Module (ECM) has detected an incorrect, implausible, intermittent, or missing signal from the Mass Air Flow (MAF) sensor. The MAF sensor measures the amount of air entering the engine, allowing the ECM to accurately calculate fuel injection quantity, ignition timing, turbocharger boost (where applicable), and emissions control. If the MAF sensor provides inaccurate airflow readings, the engine may run too lean or too rich, resulting in poor performance, increased fuel consumption, rough running, and elevated exhaust emissions. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

A Manifold Absolute Pressure (MAP) Sensor Fault indicates that the Engine Control Module (ECM) has detected an incorrect, implausible, intermittent, or missing signal from the Manifold Absolute Pressure (MAP) sensor. The MAP sensor measures the air pressure inside the intake manifold, enabling the ECM to calculate engine load and accurately control fuel injection, ignition timing, turbocharger boost (where applicable), and emissions. If the MAP sensor provides inaccurate readings, the ECM may calculate incorrect air-fuel mixtures, leading to poor engine performance, increased fuel consumption, and elevated emissions. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

A Camshaft Position Sensor (CMP) Fault indicates that the Engine Control Module (ECM) has detected an incorrect, intermittent, or missing signal from the camshaft position sensor. The CMP sensor monitors the position and rotational speed of the camshaft, enabling the ECM to accurately control sequential fuel injection, ignition timing, variable valve timing (VVT), and synchronization with the crankshaft position sensor. If the camshaft position signal becomes unreliable or is lost, the engine may experience starting difficulties, poor performance, increased emissions, or enter a reduced-power operating mode. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

A Crankshaft Position Sensor (CKP) Fault indicates that the Engine Control Module (ECM) is receiving an incorrect, intermittent, or missing signal from the crankshaft position sensor. The CKP sensor monitors the crankshaft’s rotational speed and position, allowing the ECM to accurately control ignition timing, fuel injection timing, variable valve timing, and engine synchronization. If the crankshaft position signal becomes unreliable or is lost, the ECM may be unable to determine engine position, resulting in hard starting, engine stalling, or a complete no-start condition. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

A Fuel Pump Relay Fault indicates that the relay responsible for supplying battery voltage to the fuel pump is not operating correctly. The Engine Control Module (ECM) commands the fuel pump relay to energize the electric fuel pump during engine starting and operation. If the relay fails to switch correctly or the ECM detects an abnormal electrical condition in the relay control circuit, fuel delivery may be interrupted, resulting in extended cranking, a no-start condition, engine stalling, or poor engine performance. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

A Fuel Pump Circuit Fault indicates that the Engine Control Module (ECM) has detected an electrical problem within the fuel pump control circuit. Rather than indicating a mechanical failure of the fuel pump itself, this fault points to an issue affecting the electrical supply, control, or communication between the ECM and the fuel pump assembly. The fault may involve the fuel pump relay, fuse, wiring harness, connectors, grounds, or the fuel pump control circuit. If the ECM cannot properly operate or monitor the fuel pump, fuel delivery may be interrupted, resulting in poor engine performance or a no-start condition. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

A Fuel Pump Fault indicates that the fuel delivery system is unable to supply the correct fuel pressure or fuel volume required by the engine. On the MG ZS Gen2, the electric fuel pump delivers fuel from the tank to the high-pressure fuel injection system, where the Engine Control Module (ECM) continuously monitors fuel pressure and adjusts pump operation to meet engine demand. A failing fuel pump, electrical fault, restricted fuel supply, or low fuel pressure can result in poor engine performance, starting problems, or engine stalling. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

An ABS Module Fault indicates that the Anti-lock Braking System (ABS) control module has detected an internal malfunction or is unable to correctly monitor and control the vehicle’s anti-lock braking, Electronic Stability Control (ESC), and Traction Control System (TCS). The ABS module continuously communicates with the Engine Control Module (ECM), Transmission Control Module (TCM), Body Control Module (BCM), Electric Power Steering (EPS), and instrument cluster via the Controller Area Network (CAN Bus). A fault within the ABS module or its supporting circuits can disable multiple safety systems and trigger numerous warning indicators. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.