Need help identifying thrown code
Thread Starter
Racer
Joined: Jun 2005
Posts: 348
Likes: 3
From: Leesburg GA
Need help identifying thrown code
I got a service engine light yesterday, got home and hooked up the code reader and got these 2 codes. I dont really understand what they mean, any help is appreciated.
P0056 HO2S Heater Control Circuit Bank 2 Sensor 2 ECM
P0161 HO2S Heater Performance Bank 2 Sensor 2 ECM
P0056 HO2S Heater Control Circuit Bank 2 Sensor 2 ECM
P0161 HO2S Heater Performance Bank 2 Sensor 2 ECM
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 25
From: Austin Texas
Both are for heated oxygen sensors.
P0056; The ECM detects that the affected 02 sensor heater low control circuit is not within a specified range for 25 seconds.
P0161; The ECM detects that the affected 02 sensor heater current parameter is more 1.375 amps or less than 0.25 amps.
The above condition is met for 10 seconds.
The shop manual has 3 to 4 pages on each condition.
P0056; The ECM detects that the affected 02 sensor heater low control circuit is not within a specified range for 25 seconds.
P0161; The ECM detects that the affected 02 sensor heater current parameter is more 1.375 amps or less than 0.25 amps.
The above condition is met for 10 seconds.
The shop manual has 3 to 4 pages on each condition.
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 25
From: Austin Texas
If you have headers or a CAI you can get any number of O2 sensor codes. When I first installed the headers and CAI on my car I got CEL's on every tank of gas, I cleared them each time and now only get an occasional CEL. I think the ECM in the car "learns" as it goes. My last CEL was in early January @ 7,000 miles, now @ 8,500 miles and no CEL since.
Melting Slicks
Joined: Jun 2004
Posts: 3,439
Likes: 6
From: Newark, DE
St. Jude Donor '06
Originally Posted by jster171
I'm gonna clear the code and see if it comes back. If so, i assume I have a bad o2 sensor?
Clear the codes and see if they come back.
