P0136 - downstream heated o2 sensor fault ( bank 1 ) That's the oxygen sensor in the exhaust pipe , on the passenger side of the engine , after the exhaust has passed through the catalytic converter possible causes : - pinched , shorted and corroded wiring + pins - crossed sensor wires - exhaust leaks - contaminated or damaged sensor
Check the O2 sensor after the catalytic converter.
error code o0125 ford explorer 2002
The check engine code PO136 means the O2 sensor circuit malfunction
According to my Chilton repair manual : P1504 - idle air control (IAC) valve and / or circuit fault
Trouble code P0000 means: No fault found
Code 21 indicates ECT out of self-test range
contact helms.com
Shift solenoid malfunction.
Trouble code P0440 means: EVAP Purge System Fault
(kam) KEEP ALIVE MEMORY TEST FAILURE
Code P1151 indicates a fault with one of your heated oxygen sensors in your exhaust system.
Trouble code P0775 means:Pressure control solenoid "B"