Well got another DTC code

[SSThunder]

Just replaced the PCM because it was going bad.

Now I'm getting this code: P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

Does this mean I got a bad O2?

[HillBilly]

1st:Try some dielectric grease on all the new & old electrical connections.
2nd:I apologize, not doubting skills here but....... Is it possible the code was
a mis-read P0601?
the reason I ask is that a P0600 or P0601 is: a "detected" PCM internal fault condition which could have been written/stored during the first PCM failure.
3rd: check the O2 sensor= unplug the connector > touch Ohmmeter leads across both white wires/connectors (tip:don't cut or splice O2 leads) > Confirm a reading between 5 & 7 ohms if not between 5-7 or if it's an open circuit, sensor is bad.

I hope this helps. Good Luck!

[SSThunder]

Originally Posted by HillBilly

1st:Try some dielectric grease on all the new & old electrical connections.
2nd:I apologize, not doubting skills here but....... Is it possible the code was
a mis-read P0601?
the reason I ask is that a P0600 or P0601 is: a "detected" PCM internal fault condition which could have been written/stored during the first PCM failure.
3rd: check the O2 sensor= unplug the connector > touch Ohmmeter leads across both white wires/connectors (tip:don't cut or splice O2 leads) > Confirm a reading between 5 & 7 ohms if not between 5-7 or if it's an open circuit, sensor is bad.

I hope this helps. Good Luck!

I'll check the code again. Anyway to clear the codes besides going to dealership?

[SSThunder]

I'm back for another questions. Which sensor does this code pertain to?

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

I have 4 O2 sensors. 2 on the left pipe(before/after cat) and 2 on the right pipe(before/after cat)

[HillBilly]

My guess is any of the four but bank 2 sensor 2 MIGHT be the passenger side after cat.......you'll have to test all four probably.
Sorry I couldn't be more help.

[SSThunder]

Originally Posted by HillBilly

My guess is any of the four but bank 2 sensor 2 MIGHT be the passenger side after cat.......you'll have to test all four probably.
Sorry I couldn't be more help.

Thanks. I'll check that one first. Shouldn't be too hard to check all 4.

[SSThunder]

Originally Posted by HillBilly

1st:Try some dielectric grease on all the new & old electrical connections.
2nd:I apologize, not doubting skills here but....... Is it possible the code was
a mis-read P0601?
the reason I ask is that a P0600 or P0601 is: a "detected" PCM internal fault condition which could have been written/stored during the first PCM failure.
3rd: check the O2 sensor= unplug the connector > touch Ohmmeter leads across both white wires/connectors (tip:don't cut or splice O2 leads) > Confirm a reading between 5 & 7 ohms if not between 5-7 or if it's an open circuit, sensor is bad.

I hope this helps. Good Luck!

finally got time to check the o2 and the harness connector has a white wire, blue wire and 2 black wires. which one do i check. also does the truck need to be running or just have the key in the on position.

Thanks, Jeremy