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An overdue oilchange can block the valve timing solenoid passages, leading to malfunctions and a lit check engine dashboard light. Moreover, since the ECM can’t perform proper diagnostictests due to low voltage, it may trigger the Check Engine Light. Use the OBD-II scanner to reset the CEL.
Steady Check Engine Light with Other Lights Driving when a Ram Check Engine Light appears along with other dashboard lights , such as an engine temperature light, oil pressure light , or brake light , can cause engine damage or compromise your safety. In this case, your truck may require an urgent coolant top-up, oilchange , brake pads, etc.
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