Get the manual and check what the flash codes are??
What vehicle is it? What engine? What year?
Wait a second and keep your eye on the check engine light. You should see it start to light up in a series of flashes.
The light is blinking in a simple code of long and short. Long blinks mean "10" and short blinks mean "1".
The 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. 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. I was worried that I might have to pull over to the side of the road when I saw the light or get it to a mechanic ASAP, but now I know that it's not life threatening to the car and that it's OK if I get it looked at the next time I am at my mechanic.
You can find a list of error codes for the make and model of your car online by doing a simple search. The ones for Honda are included below.
Honda Check Engine Light Error Codes
0 ECU
1 Oxygen Sensor
3 Map Sensor
5 Map Sensor
6 Crank Angle
7 Throttle Angle
8 TDC Position
9 No. 1 Cylinder Position
10 Intake Air Temperature
12 Exhaust Gas Reiculation (EGR) System
13 Atmospheric Pressure
14 Electronic Air Control
15 Ignition Output Signal
16 Fuel Injector
17 Vehicle Speed Sensor
20 Electronic Load Detector
22 Vtec System Malfunction
23 Knock Sensor
41 o2 Sensor
43 Fuel Supply System
45 System Too Rich or Too Lean
48 Primary Heated o2 Sensor
54 Crankshaft Speed Fluctuation Sensor
61 Primary o2 Sensor Circuit
63 Secondary o2 Sensor Circuit
67 Catalyst Sytem
70 Automatic Transaxle
71-74 Random Misfire
80 Exhaust Gas Recirculation
86 Engine Coolant Temperature Circuit
90 Evaporative Emission Control System Leak Detected
91 Fuel Tank Pressure Circuit
92 Evaporative Emission Control System Insufficient
SOURCE: shuts off while driving. no fuel pressure. pcm fuse blows/ fuel pump relay inserted.
Sounds like the fuel pump is shorted.
SOURCE: 2002 Toyota Tundra Stalls
The throttle body needs cleaning. It has some carbon build up, and when the battery went dead the computer lost its learned values, one of which is base throttle position. Now its reset back to factory specs, not accounting for a dirty throttle body. Seen it a million times
SOURCE: Car runs very ruff at idle.Check engine light was flshing
You need to have it check immediately if the CEL was Flashing.This means that your engine is experiencing a serious missfire and damage to the catalytic convertors can occur if you continue to drive it. If it was on steady then it means PCM has detected a concern and you should have it check but will not cause damage.
SOURCE: 2008 Toyota Tundra shuts off immediately after starting up
It sounds like you have a bad key-transponder ECU. It should still be under watrranty. This is a known problem, and a bulletin has been distruiibuted to address this issue.
SOURCE: security light flash no security system on truck
sometimes turning the ignition on 3 times quickly without starting will reset the computer. If the van has power locks and keyless entry then try using only the keyless entry. Sometimes your car wont have a alarm but an anti theft device which will not allow it to start if it goes off or something triggers it.
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