20 Most Recent
2004 GMC Envoy - Page 9 Questions & Answers
Computer code P0042
In my database, that code doesn't compute for your vehicle? With the larger engine, my database says bank 1 and bank 2, sensor 1 and sensor 2. No sensor three. The code does talk about 02 heater circuit, so, I would have to check wiring circuits. Once the problem is fixed, the check engine lite should go out. The code will probably stay in memory for so many engine warm up cycles then it is gone.
My scanner will read and erase codes. You can check some obd2 code readers, see if they will read and erase codes? Some people will take the negative battery cable loose to erase codes. I have to say, I don't like to do that. If the problem isn't fixed, the lite will just come back on, again.
My 2004 envoy starts but
Sounds like a bad ignition switch. There are 3 main ignition circuits coming from the switch, and one will control the engine and starting. One circuit is probably dead thru the switch, causing all the accessories to not function. I would tr that first.
Had a flat tire,reduced engine power light came on
Either the tire pressure monitoring system detected excessively low or zero tire pressure and the computer has been programmed to set the vehicle into limp mode when that happens or a wheel speed sensor or another sensor detected an issue when the tire deflated and the computer sent the vehicle into limp mode.
One way or the other, once in limp mode there would have been fault codes generated and could have be read with a scan tool. They have probably cleared now.
What does code p1114 mean?
The first hing I would do is look at the coolant temp sensor data on a scan tool. This will tell me what the computer is seeing. If it is reading something way different than it should I would unplug it and see what the value changes to. It should read -40F. if it reads anything other than there is a problem with wiring or the computer. If it does read -40 than I would likely replace the coolant temp sensor. I’m happy to assist further over the phone at
https://www.6ya.com/expert/jeremy_d728a59f986299fa
Not finding what you are looking for?