Understand the gmc check engine codes stated on the OBD II scan tool is an important thing. The code helps you to analyze the problem on the GMC. By knowing the exact problem, you know what to do and the fixing process is faster and efficient.
GMC Sensor Trouble Codes
Sensor circuit low voltage is a common problem and it has to be fixed right away. Let say, the GMC has a problem with the engine coolant temperature sensor circuit low voltage. You can make it sure when you see code P1114 and P1115 on the scan tool. The P1114 code means that the voltage is low whereas the P1115 code means that the voltage is high.
GMC Signal Trouble Codes
The low signal is also a common problem and it disturbs you to know the actual condition of the vehicle. There are several gmc check engine codes related to the low or unstable signal. For instance, P1116 code and it is the code for the unstable ECT signal, P1117, and P1118 for the low or high engine coolant temperature out-of-range signal.
GMC Circuit Trouble Codes
Sometimes, there is also a problem on the circuit of the vehicle. Just use the scan tool to check the code. If the scan shows P1185, P1186, and P1187 gmc check engine codes it means that the GMC has a problem on the engine oil temperature circuit, EOT circuit performance, and EOT sensor circuit low voltage.
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