What does code 12 on Check Engine light mean?
Code 12 indicates a problem with my EGR system. This is the system that sends some of the engine’s exhaust into the cylinder to cool the combustion process and keep temps in the cylinders down. Having a broken EGR is relatively common on a high mileage car (I have 180,000 miles on mine) and it’s a pretty easy fix.
Which is the only CMP code for a V6 engine?
If your engine has only one CMP, such as an inline-four-cylinder, the only CMP code available is for Bank 1, P0340. On the other hand, V6 or V8 engines have two banks, Bank 1 and Bank 2, and would therefore have two CMPs, so DTC P0345 would refer to Bank 2.
When did the Check Engine light come on?
After 1996 all cars were made to hook up to an external error code reader. Before 1996 however, cars reported their errors from the computer themselves via a flashing code from the check engine light. The dreaded check engine light comes on while you are driving only to signify that there is a problem.
What does it mean when your check engine light blinks twice?
Long blinks mean “10” and short blinks mean “1”. My light was blinking once for a long time, and then twice for a short time. 10, 1 and 1 is error code 12. Code 12 indicates a problem with my EGR system. This is the system that sends some of the engine’s exhaust into the cylinder to cool the combustion process and keep temps in the cylinders down.
What is the diagnostic code for a Chevy check engine light?
Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other Chevy diagnostic trouble codes. Manufacturer Specific Codes P0342Camshaft Position Sensor A Bank 1 Low Input – Related Information P1031HO2S Heater Current Monitor Control Circuit Sensors 1
What is the oxygen sensor code for a Chevy?
P1137HO2S Bank 1 Sensor 2 Lean Or Low Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Trouble Code P1138HO2S Bank 1 Sensor 2 Rich Or High Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Check Engine Light Code
Where do I find the trouble code on my Chevy?
These are listed in numerical order for easy searching. When retrieving Chevy trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on. 3.
What does code23 on check motor light mean?
Let’s say, Code23 would be like a pulse – pulse – pause – pulse – pulse, and – pulse. In this stage, you need to note down the code as it flashes in your vehicle’s check motor light because each code would come together and help you in understanding the issue in a proper way.
The ECMwill flash each code three times, and move on to the next. If you have no codes stored, it will keep flashing code 12. Code 12 simply tells you the ECM is not receiving any pulses from the distributor (since the car is not running). If you pull codes with a scantooland the car is running, this code will not show up.
What should I do if my check engine light keeps flashing?
The first thing you should do if the check engine light is flashing or is constant on your dashboard is to read the trouble code memory. When the engine light is lit up, and the engine control unit recognizes a problem with the engine, the engine control unit will store a trouble code in the memory.
Where can I get free check engine light codes?
Scan your codes and follow the chart to determine what the code means. Some shops will scan your codes for free. Autozone is one place that will give you the code number. Or do it yourself with the procedure posted below.
How to clear a service engine light error code?
To clear any trouble codes, disconnect the power feed for 30 seconds. If this is done at the battery, and your car stereo is equipped and programmed with a four digit pin code, you may have to re-enter that as well to use your stereo again. A better place to remove power is at the fuse. 12. No reference pulses to Electronic Control Module (ECM).