• posted by Craig Murray

The U0140 Lost Communication With BCM indicates that one or more vehicle control modules have lost communication with the Body Control Module (BCM) over the Controller Area Network (CAN Bus). The BCM serves as the central controller for numerous body electrical systems, including central locking, lighting, power windows, keyless entry, immobiliser functions, wipers, interior lighting, and communication with the Engine Control Module (ECM), Transmission Control Module (TCM), ABS module, and instrument cluster. If communication with the BCM is interrupted for longer than the manufacturer’s specified time, the affected control module stores DTC U0140. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

The U0121 Lost Communication With ABS Module indicates that one or more vehicle control modules have lost communication with the Anti-lock Braking System (ABS) control module over the Controller Area Network (CAN Bus). The ABS module continuously exchanges information with the Engine Control Module (ECM), Transmission Control Module (TCM), Body Control Module (BCM), Electronic Stability Control (ESC), Electric Power Steering (EPS), and instrument cluster to support braking, traction control, and vehicle stability functions. If communication with the ABS module is interrupted for longer than the manufacturer’s specified time, the affected control module stores DTC U0121. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

The U0101 Lost Communication With TCM indicates that one or more vehicle control modules have lost communication with the Transmission Control Module (TCM) over the Controller Area Network (CAN Bus). The TCM manages transmission operation by exchanging real-time data with the Engine Control Module (ECM), ABS module, Body Control Module (BCM), instrument cluster, and other electronic systems. If communication with the TCM is interrupted for longer than the manufacturer’s specified period, the affected module stores DTC U0101. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

The U0100 Lost Communication With ECM indicates that one or more control modules have lost communication with the Engine Control Module (ECM) over the Controller Area Network (CAN Bus). The ECM is the primary module responsible for engine management and exchanges data continuously with the Transmission Control Module (TCM), ABS module, Body Control Module (BCM), instrument cluster, and other electronic systems. If communication with the ECM is interrupted for longer than the manufacturer’s specified time, the affected module stores DTC U0100. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

The P2138 Accelerator Pedal Position Correlation Fault indicates that the Engine Control Module (ECM) has detected an implausible correlation between the two accelerator pedal position (APP) sensor signals within the electronic accelerator pedal assembly. The MG ZS uses dual APP sensors as part of its electronic throttle control (drive-by-wire) system to provide redundant input for safety and precise throttle control. If the ECM detects that the two sensor signals differ beyond the manufacturer’s specified tolerance, it stores DTC P2138 and may limit engine performance to protect against unintended acceleration. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

The P0741 Torque Converter Clutch Performance Fault indicates that the Transmission Control Module (TCM) has detected that the torque converter clutch (TCC) is not engaging, disengaging, or locking up as expected. The TCC improves fuel efficiency by mechanically linking the engine and transmission at cruising speeds, reducing torque converter slip. If the TCM detects excessive slip when the clutch is commanded on, or insufficient performance during operation, it stores DTC P0741. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

The P0705 Transmission Range Sensor Circuit Fault indicates that the Transmission Control Module (TCM) or Engine Control Module (ECM) has detected an invalid or implausible signal from the transmission range sensor, also known as the gear position or park/neutral position sensor. This sensor informs the control modules of the selected gear (Park, Reverse, Neutral, Drive, etc.) and is essential for proper gear selection, starting, and shift control. If the signal is missing, inconsistent, or outside the expected range, the control module stores DTC P0705. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

The P0700 Transmission Control System Fault indicates that the engine control module (ECM) has received a request from the Transmission Control Module (TCM) to illuminate the Check Engine Light because the TCM has detected one or more transmission-related faults. P0700 itself does not identify the specific transmission problem; instead, it serves as a notification that additional diagnostic trouble codes are stored in the TCM. Retrieving and diagnosing these accompanying transmission codes is essential to determine the root cause. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

The P0700 Transmission Control System Fault indicates that the engine control module (ECM) has received a request from the Transmission Control Module (TCM) to illuminate the Check Engine Light because one or more transmission-related diagnostic trouble codes have been stored. P0700 is an information code and does not identify the specific transmission fault. Additional transmission codes stored within the TCM must be retrieved using a compatible diagnostic scan tool to determine the root cause. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.

• posted by Craig Murray

The P0507 Idle Speed Higher Than Expected fault indicates that the engine control module (ECM) has detected an idle engine speed that is consistently higher than the manufacturer’s specified target. The ECM continuously monitors engine RPM, throttle position, intake airflow, and engine operating conditions. If the actual idle speed remains above the commanded value for a specified period, the ECM stores DTC P0507. This fault applies to the MG ZS Gen2 (ZS11 platform), introduced from 2024 onwards.