Hi Scotty, watched your video about this subject and it was great! My daughters car last night turned over and didnt start, but then she tried again and it did start after a few minutes. It started perfectly fine this morning, then went to the shops and that was it! It turns over but wont start (and it still at the shops lol). I did an OBDII scan and it threw A LOT of codes and I am hoping they are mostly related. The car did have a Catalytic Converter replaced before we purchased it. Which of these codes could tell me the non-start issue? I just want to get it going until my brother (who is a mechanic) gets here from interstate. The car has been running like a dream up until now 🙁 Thank you so much. Cher
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P0420
Raw code: 0420
ECU: OBD-II
Status: Confirmed
OBDII: Catalytic converter system, bank 1 - efficiency below threshold
Volkswagen: Catalyst System Low Efficiency
============2==============
P0261
Raw code: 0261
ECU: OBD-II
Status: Confirmed
OBDII: Injector 1 - circuit low
Volkswagen: Cylinder 1 Injector Circuit Low
============3==============
P0267
Raw code: 0267
ECU: OBD-II
Status: Confirmed
OBDII: Injector 3 - circuit low
Volkswagen: Cylinder 3 Injector Circuit Low
============4==============
P0270
Raw code: 0270
ECU: OBD-II
Status: Confirmed
OBDII: Injector 4 - circuit low
Volkswagen: Cylinder 4 Injector Circuit Low
============5==============
P0264
Raw code: 0264
ECU: OBD-II
Status: Confirmed
OBDII: Injector 2 - circuit low
Volkswagen: Cylinder 2 Injector Circuit Low
============6==============
P0445
Raw code: 0445
ECU: OBD-II
Status: Confirmed
OBDII: Evaporative emission (EVAP) canister purge valve - short circuit
Volkswagen: Evaporative Emission Control System Purge Control Valve Circuit Shorted
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P0037
Raw code: 0037
ECU: OBD-II
Status: Confirmed
OBDII: Heated oxygen sensor (HO2S) 2, bank 1, heater control - circuit low
Volkswagen: HO2S Heater Circuit Low Voltage Bank 1 Sensor 2
============8==============
P0418
Raw code: 0418
ECU: OBD-II
Status: Confirmed
OBDII: Secondary air injection (AIR) pump relay A - circuit malfunction
Volkswagen: Secondary Air Injection (AIR) Pump Relay Control Circuit Bank 1
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P0321
Raw code: 0321
ECU: OBD-II
Status: Pending
OBDII: Crankshaft position (CKP) sensor/engine speed (RPM) sensor - range/performance problem
Volkswagen: Ignition/Distributor Engine Speed Input Circuit Range/Performance
Also, it is a 2.0l automatic.
Thank you heyinway. I had it at the Auto Electrician today and it turns out I had water leaking in to the dash somehow that has wet the electrics. They are drying it out overnight and we will see if it rights itself. If not, I guess I am going to be up for a bit of a cost. Or do I scrap it? Who knows?
Youhave way too many codes..water got into the ECM contacts and threw the codes. You need to pin point the ECM location and WHERE the water intrusion began and ended up being. You might have to take the ecm and cover it in plastic sheeting for that next. rain. Another is although the ecm is getting water poured onto it its the wires which get rained on and then lead to the ECM for this problem. I am sure you get it sorted out....
Crank sensor... Check entire length of its wire harness to computer. It can get mis-routed and become damaged.
Look for oil on outside of its connector. This can be from engine external leak close by or from the sensor leaking.
Look for swelled insulation on its wiring and inside its connector. The sensor is exposed to engine oil pressure. The tiny seal inside the sensor can leak and allow engine oil to enter connector and also wick into the wiring. This shorts out the connection and doesn't allow engine computer to see engine cranking...computer doesn't turn on anything to allow start up. If the wiring has oil in it, it has to be replaced to a point of good wire. Also replace sensor.
No oil present...look at tip of sensor for debris (sludge) . It looks at a part inside the engine, if it can't see it, it doesn't work. Quick test is clean off tip and see if engine starts. It may be ok for a while and act up again with more build up.
None of the above...replace sensor.
Injector codes are due to no start condition.
400 series codes are emissions related...won't pass emissions test.
