Emissions service warning light.
Discussion
This is a popular little ditty that shows itself quite regularly. You could diagnose it properly, however - 99 times out of 100, its plugs, coils and airfilter. Depending on how old your car is and service etc and who does your service. Obvioulsy if its a new car, get the garage to look, if you service yourself, better get a OBDII, find the fault, then change the P, C and AF
If you have had you car 2 months I would speak to your dealer and have it diagnosed. It is more than likely a false alarm and just needs re setting.
I had this come up after 3 weeks of ownership of my V8V 2007MY. The dealer looked at it and after plugging it into the AM diagnostic machine it was a false alarm and nothing was wrong.They just reset.
I had this come up after 3 weeks of ownership of my V8V 2007MY. The dealer looked at it and after plugging it into the AM diagnostic machine it was a false alarm and nothing was wrong.They just reset.
Edited by bomberh on Sunday 24th February 17:00
good grief said:
Thanks guys its a bit of a trek to main dealers, is there any way I can remove the message till I get time to run over to them?
The message should remove itself if there is no problem. It will retain it in the memory (until you remove it from the memory)If you buy a OBDII, then you can read the messages, then delete and reset the OBD. If its just a glitch, it won't come back. I thought my O2 sensors had gone, when I contacted AM they said the O2 sensors are very reliable. But of course O2 sensors will go ......
Tony V12V said:
Any emission related warning messages/light will usually stay on until the fault code is erased from the ECM I believe.
You may be right. In which case I stand corrected. When my light came on, it would come on intermittently, indicating that it only sees a fault on a bad day. If someone could clarify if the light stays on until turned off, it would be appreciated. Bravo73 said:
Coincidentally, mine also came on for the first time over the weekend ('07 V8V, 26k miles).
I am going to order an OBDII reader from fleabay tomorrow and take it from there.
Just a quick update:I am going to order an OBDII reader from fleabay tomorrow and take it from there.
Bought a cheap OBDII reader from fleabay ( www.ebay.co.uk/itm/251195516598), plugged it in and cleared the code.
If you're interested, the code was "P0133 02 Sensor Circuit slow response (Bank 1 Sensor 1).
I cleared the code and in the short drive afterwards, the engine light (MIL) didn't come back on.
If you're really interested, this is what the AM OBDII manual says:
P0133/P0153 - Heated Oxygen Sensors (HO2S)
P0133 - HO2S1-1 slow response P0153 - HO2S2-1 slow response
MIL status
These codes will light the MIL
Fault analysis
Note: These codes will only occur if the oxygen sensor performance is seriously degraded.
1. Connect AMDS and confirm that either P0133 or P0153 is logged.
If any other faults are logged, resolve these codes first.
Return to this procedure only if either P0133 or P0153 is logged again after clearing all other codes.
2. Set datalogger to monitor all upstream oxygen sensor readings on the affected engine bank.
3. Carry out a KOER test and run until the engine is fully warmed up. Start the datalogger and log the oxygen sensor readings.
Switch off the ignition and analyse the recorded sensor readings.
If any HO2S signal indicates an abnormally high Voltage, service the circuit as required, clear the P0133/P0153 code and carry out a KOER test until the engine is fully warmed up to ensure that the issue is resolved.
If no circuit fault is identified, swap the upstream sensors on the suspect bank. Repeat the datalogger test.
If the fault has changed front to rear or vice versa, replace the suspect sensor, clear the P0133/P0153 code and carry out a KOER test until the engine is fully warmed up to check that the issue is resolved.
4. If P0133/P0153 is still present, contact Aston Martin Technical Support.
Bravo73 said:
Just a quick update
Thanks for that ..... so what did you do?Did you clear the codes? I guess you cleared the codes and it has not come back. But was it the O2 sensor at fault then? Or did the O2 sensor just have an, "off", day?
When I as talking to AM about this a while ago, they said it could be an O2 sensor gone, but they are normally quite reliable.
petesv8v said:
Same here - 07 31000 miles had 4 alerts for bank 1 sensor 1 in last 2000 miles - no rhyme or reason to the alert. Going to have both bank number 1 02 sensors changed.
I would not waste your money, I tried changing all the sensors following the emmission warnings and the message came up 10 miles down the road.I was reliably informed that the mapping for these engines and the emmissions system was not the best- Just buy a reader and cancel the code yourself- in my case the errors kept comming despite the new 02 sensors and after various trips to the dealer- was never resolved
Edited by 355f on Friday 15th March 20:54
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