DTC Code help

Reply Subscribe

Thread Tools

Search this Thread

Nov 19, 2006 | 11:29 PM

fright88

Thread Starter

Safety Car

Joined: Jan 2006

Posts: 3,713

Likes: 0

From: Littleton CO

DTC Code help

My car has a check engine light on. It is throwing 4 codes.

one is P0155
one is C0221
one is C0222
and I think the final is C0248

can anyone help me with what any of these mean.

Thanks

Nov 20, 2006 | 08:13 AM

fright88

Thread Starter

Safety Car

Joined: Jan 2006

Posts: 3,713

Likes: 0

From: Littleton CO

Anyone? I know the last 3 codes are incorrect I will re post those later. The first looks like it has something to do with an 02 sensor. But I don't know which one. Or if this is normal for long tube headers.

Nov 20, 2006 | 08:22 AM

Bill Curlee

Tech Contributor

Joined: Dec 1999

Posts: 32,910

Likes: 2,402

From: Anthony TX

CI 6,7,8,9,11 Vet

St. Jude Donor '08

Here is a website for a really comprehensive C5 DTC database:

This is the absolute best C5 Code web site!!!

http://www.corvettedoctor.com/Code_Main.html
http://www.corvettedoctor.com/index.html

[www.corvettedoctor.com

Go to “technical data base” and then to “Corvette ECM Computer Codes”. Then select your year car. Read the instructions and then scroll down to the "READ MORE" window to view the code definitions.\

Here is another very good site:

http://www.obd-codes.com/trouble_cod...d-ii-codes.php

Make sure to include the H or C suffix!!

Once you get the correct codes, we will help you figure it out.

BC

Nov 20, 2006 | 08:31 AM

fright88

Thread Starter

Safety Car

Joined: Jan 2006

Posts: 3,713

Likes: 0

From: Littleton CO

Thanks. Ok the C codes were all H the P was a C.

I think that means the C were history correct?

I know for sure one code was P0155 which the list says H02S Heater performance. But I have no idea what that means. So I guess I should start with this code.

Nov 20, 2006 | 08:45 AM

runamuk

Le Mans Master

Joined: Jul 2002

Posts: 7,370

Likes: 8

From: Slave to the evil empire

Cruise-In V Veteran

St. Jude Donor '04

Quote:

Originally Posted by fright88

Your codes that start with a P are from the PCM and will make the check engine light come on, the codes that start with a "C" come from the BCM if your fault code ends with an "H" it's a history code but the check engine light may still be illuminated and if it ends with an "HC" or a "C" then it is a current fault.

Your 02 sensor heater is not working and that is why your check engine light is on.

Last edited by FFR-Z06; Nov 20, 2006 at 08:48 AM.

Nov 20, 2006 | 08:49 AM

fright88

Thread Starter

Safety Car

Joined: Jan 2006

Posts: 3,713

Likes: 0

From: Littleton CO

Ok so is there any way to find out which one that is or do I need to bring it in to find other codes?

Nov 20, 2006 | 07:26 PM

Mr. Lucky

Melting Slicks

Joined: Jun 2004

Posts: 3,439

Likes: 6

From: Newark, DE

St. Jude Donor '06

Quote:

Originally Posted by fright88

Ok so is there any way to find out which one that is ... ?

P0155 = Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1

Bank 2 = passenger side
Sensor1 = forward (pre-cat) sensor

Nov 20, 2006 | 07:27 PM

fright88

Thread Starter

Safety Car

Joined: Jan 2006

Posts: 3,713

Likes: 0

From: Littleton CO

Ok so I had

P0155 H C
C1221 H
C1222 H
C1248 H
Bo367 H
B2282 H
B2286 H
B2284 H

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Michael S. Palmer

2027 Corvette vs The World: Every Model vs Closest Competitor

Joe Kucinski

10 Most Common Corvette Problems of the Last 20 Years!

Joe Kucinski

5 MOST and 5 LEAST Popular Corvette Model Years in History!

Joe Kucinski

2027 Corvette Buyer's Guide: Everything You Need to Know!

Joe Kucinski

10 Things C8 Corvette Owners Hate (But Won't Tell You)

Joe Kucinski

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Brett Foote

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Joe Kucinski

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Michael S. Palmer

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Joe Kucinski

Nov 20, 2006 | 07:30 PM

fright88

Thread Starter

Safety Car

Joined: Jan 2006

Posts: 3,713

Likes: 0

From: Littleton CO

Ok so it would seem like my forward passenger side 02 is bad then? I know it is plugged in. If I put them in wrong would both fronts be going off?

Also would this cause the car to idle really badly and the exhaust to smell like gass?

Nov 20, 2006 | 07:34 PM

#10

fright88

Thread Starter

Safety Car

Joined: Jan 2006

Posts: 3,713

Likes: 0

From: Littleton CO

Quote:

Originally Posted by Mr. Lucky

P0155 = Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1

Bank 2 = passenger side
Sensor1 = forward (pre-cat) sensor

Sweet reply thanks. Although I don't have the equipment to test it LOL.

Nov 20, 2006 | 07:55 PM

#11

Mr. Lucky

Melting Slicks

Joined: Jun 2004

Posts: 3,439

Likes: 6

From: Newark, DE

St. Jude Donor '06

Quote:

Originally Posted by fright88

Ok so it would seem like my forward passenger side 02 is bad then? ... If I put them in wrong would both fronts be going off?

Not necessarily, and yes. Check for any exhaust leaks before and immediately after the sensor. Also check for burned sensor leads. Sometimes the sensors themselves will melt from header heat. Only replace the sensor if it is melted or if no other problems are found. If your sensor is melted, replace it and wrap the new one with Coolsox material (asbestos?), held in place with baling wire (zip-ties would fall apart from the heat).

Quote:

Also would this cause the car to idle really badly and the exhaust to smell like gass?

Possibly, since the failure to see a proper sensor reading would inhibit proper closed-loop operation.

The P0155 code is the only one relevant to your CEL. Just erase the others and see if they come back.