so i recently got the check engine light of hell lol....so i took it to autozone and six codes came up jeez....

1st code: P0102.........something to do with the MAF sensor
2nd code: P0122......throttle position sensor..maybe electrical?
3rd code: P0300......cylinder misfires-random cylinders...
4th and 6thcode: P0420.....something with the cat...i was goin to replace the cat with a high flow one anyway
5th code: P1406........EGR valve..maybe showing because of the cat code

any suggestions/help/

 

What year?

 

its a 97

 

Does the voltage hold up okay driving around? Any mods on the car? Lastly, how does the car run?

P0102 Mass Air Flow (MAF) Sensor Circuit Low Frequency
P0122 Throttle Position (TP) Sensor Circuit Low Voltage
P0300 Engine Misfire Detected
P0420 Catalyst System Low Efficiency
P1406 EGR Valve Pintle Position Circuit

 

P0102-MAF sensor, take a look at the air filter. If OK then try this:

DIAGNOSTIC AIDS
Inspect for the following conditions:

•A misrouted harness-Inspect the harness of the MAF sensor in order to verify that it is not routed too close to the following components:
•The secondary ignition wires or coils
•Any solenoids
•Any relays
•Any motors
•A low minimum air rate through the sensor bore may cause this DTC to set at idle or during deceleration. Inspect for any vacuum leaks downstream of the MAF sensor.
•A wide open throttle acceleration from a stop should cause the MAF sensor g/s display on the scan tool to increase rapidly. This increase should be from 4-7 g/s at idle to 150 g/s or more at the time of the 1-2 shift. If the increase is not observed, inspect for a restriction in the induction system or the exhaust system.
•A resistance of 20 ohms or more on the ground circuit of the MAF sensor can cause this DTC to set.
P0300- Random misfire, usually due to a lean condition, which could be due to a fuel system problem, EGR stuck open, bad MAF. Try running the car with the MAF disconnected, if misfire clears then the MAF is bad.
P0420- This would usually point to a sick cat converter, but in this case it could be due to the misfire dumping too much unburnt fuel in the exhaust.
P1406- The PCM is not seeng movement in EGR, could be a bad EGR or just dirty exhaust gas passages, or problem in the EGR controls. The EGR not working could cause most of the problems.

 

that's nice!....

 

i say a write up on how to clean the tb im gonna do that and replace the cat and exhaust when it stops raining...hopefully thatll ease some things