Need some experts help....

[project_EM1]

Okay so recently I got a po0172 code( fuel trim too rich ) and change out the bad injector now that's gone.

Now I just threw two more codes po0116( ect circuit malfunction ) and a po0135 ( o2 sensor heater malfunction )

So what I'm asking is how will this effect the driving capacity of my car, and what would cause these problems.

And what's is the average price on those parts.

[slostang]

year make and model?

Adverse effects are probably just bad gas mileage and or damage to the catalytic converter

[slostang]

99% of the time a P0116 is either a thermostat or coolant temp sensor. I say put a thermostat in it, clear the codes and see if the P0135 returns. If not, Great! if it does, replace the upstream o2 sensor.

Im guessing its the EM1...