Quote:
Originally Posted by JFP in PA
Another example of “throwing money at the problem” rather than diagnosing what the DME is telling you……… There is nothing wrong with any of your 02 sensors, probably never was.
P1123 indicates an over rich condition on one cylinder bank (cylinders 1-3) that the 02 sensor and DME fuel trims cannot adjust for, usually caused by either a leaking injector or excessively high fuel pressure.
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Hello JFP in PA,
I strongly agreed with you about throwing good money away. I do really regret getting 4 new O2 sensor and after all the original O2 sensor is still good.
So, how could i check for leaking injector and high fuel pressure?
Please help, I don't want to throw a good money away and i am really frustrated cause my car failed smog test and the registration is due.
Thanks