the only way you can get a code 19 is by having an automatic ECU - are you sure you are counting the ECU flashes correctly? does it flash 19 times (which would be the auto lock-up code)? or, is it flashing once then pausing and then flashing 9 times? that would be 2 codes, one for the O2 sensor and one for the cylinder sensor - i assume you have a PM5 ecu, which only has short flashes - it doesn't flash long and short like a PR3, PR4 or PW0 ECU