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4 Posts
Hey guys, I have an 03 OBW 4cyl. tripped CEL last week. Said p0030__E1 heater control circuit bank 1 sensor 1. I think car had original O2 sensor so just bought a new Denso 234-9015 upstream unit then replaced.I did do the front sensor, bad place to get out of, dropped front pipe made sure elec connection was solid. I don't see any corrosion on pins.
Cleared codes, all good for a few days. Yesterday CEL went back on, same code. Not funny. Car needs to go to inspection in the next month.
I did some testing of OLD unit across 3-4 term. opposite side of lock tab- res says 2.4 ohms. not sure what is normal- I think I read 3 ohms. NEW unit says about 2 initially then quickly drops to about 1.8ohms. Something seems wrong.
I'm not sure if I need to send unit back.
Old unit definitely tired, car runs much better but need some resolution.
Thanks in advance, Eric
Cleared codes, all good for a few days. Yesterday CEL went back on, same code. Not funny. Car needs to go to inspection in the next month.
I did some testing of OLD unit across 3-4 term. opposite side of lock tab- res says 2.4 ohms. not sure what is normal- I think I read 3 ohms. NEW unit says about 2 initially then quickly drops to about 1.8ohms. Something seems wrong.
I'm not sure if I need to send unit back.
Old unit definitely tired, car runs much better but need some resolution.
Thanks in advance, Eric