What is ECM error code?
Error code P0204 occurs when the PCM (Powertrain Control Module) or ECM (Engine Control Module) detects a cylinder 4 injection circuit malfunction. In other words, this error code is triggered when these modules determine a low or high voltage drop or resistance at the injector 4.
What does trouble code 14 on GM ECM mean?
NOTE: If codes 21 and/or 22 are also present cause ‘4’ above should be checked first. Trouble Code 14 indicates that the Coolant Temperature Sensor (CTS) is reporting abnormally high readings. CTS is used to control fuel mixture, timing, idle speed, TCC and EGR operations among others.
Where are trouble codes stored on a GM W-body?
This computer is called the ECM, or “Electronic Control Module”. The ECM is constantly controlling, adjusting, and monitoring engine conditions. If there is an engine malfunction caused or detected by any one of the many sensors connected to the ECM, a trouble code will be stored in NVM,…
How can I tell if my Chevy ECM is running?
Turn the Chevy’s electrical system on, but leave the engine off. An active electrical system means the ECM will also be up and running. Count the flash codes and record them onto a sheet of paper. The check engine light will flash the codes at you, in a series of long and short pulses of light.
What does the code 86 mean on a Chevy ECM?
Count the flash codes and record them onto a sheet of paper. The check engine light will flash the codes at you, in a series of long and short pulses of light. For example, General Motor’s code 86 will appear as eight long flashes, followed six shorter flashes. There will be a dark, silent pause between coding sets.
NOTE: If codes 21 and/or 22 are also present cause ‘4’ above should be checked first. Trouble Code 14 indicates that the Coolant Temperature Sensor (CTS) is reporting abnormally high readings. CTS is used to control fuel mixture, timing, idle speed, TCC and EGR operations among others.
This computer is called the ECM, or “Electronic Control Module”. The ECM is constantly controlling, adjusting, and monitoring engine conditions. If there is an engine malfunction caused or detected by any one of the many sensors connected to the ECM, a trouble code will be stored in NVM,…
What does trouble code 22 on GM W-body ECM mean?
NOTE: Presence of codes 33 and/or 34 may indicate that the MAP sensor is defective and is reading less than expected. This may cause the above set-conditions to be met falsely and this code to be set. Trouble Code 22 indicates that the Throttle Position Sensor (TPS) is reading abnormally low.
Where are trouble codes stored in an ECM?
If there is an engine malfunction caused or detected by any one of the many sensors connected to the ECM, a trouble code will be stored in NVM, or Non-Volatile Memory. What you need to do first is find out what trouble codes are presently stored in the ECM. You can read these trouble codes in several different ways.