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What is the CMDTCS fault code?

1 Answers

TaliaAnn

07/30/25 10:18am

CMDTCS refers to a traction system malfunction. Issues with the traction system can lead to reduced fuel injection, such as clogged injectors, low fuel pressure, or impurities in the gasoline. Inspect and replace the air flow meter or oxygen sensor if necessary, as inaccurate air measurement can cause discrepancies between the detected and actual air intake. Additionally, inaccurate closed-loop feedback signals, such as a faulty oxygen sensor, can contribute to the problem. Causes of traction system malfunction: Reduced fuel injection due to fuel system issues like clogged injectors, low fuel pressure, or impurities in the gasoline; inaccurate air measurement leading to mismatches between detected and actual air intake. If the detected air intake is lower than the actual intake, the PCM-calculated relative demand decreases, resulting in a lean oxygen sensor feedback signal. This causes the PCM to increase fuel injection, raising the positive fuel trim value. Inaccurate closed-loop feedback signals from the traction control system, such as a faulty oxygen sensor, can also be a factor. Solutions for traction control system faults: Replace fuel, injectors, spark plugs, or the fuel pump as needed.

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