Check engine light on with codes
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 8,222
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From: Norfolk VA
Check engine light on with codes
Got a check engine light and can't find anything ovbiously wrong (exhaust leak, gas cap)
I checked the codes and got these
10 PCM - P1416 H C - AIR System bank 2-B
60 IPC - B0516 H - Speedometer Signal Circuit Malfunction
60 IPC - U1160 H - Loss of Communications with LDCM
A0 LDCM B2282 H - Battery #1 Fault DCM-LEFT
A0 LDCM B2284 H - Battery #2 Fault DCM-LEFT
A1 RDCM B2283 H - Battery #1 Fault DCM-RIGHT
A1 RDCM B2285 H - Battery #2 Fault DCM-RIGHT
A6 SCM No Comm
B0 RFA C2100 H C - Left Front TPM Sensor Malfunction -TPM
B0 RFA C2105 H - Right Front TPM Sensor Malfunction -TPM
B0 RFA C2110 H C - Right Rear TPM Sensor Malfunction -TPM
B0 RFA C2115 H C - Left Rear TPM Sensor Malfunction -TPM
B0 RFA U1255 H - Serial Data Line Malfunction -RFA
what the heck is going on with my car
I checked the codes and got these
10 PCM - P1416 H C - AIR System bank 2-B
60 IPC - B0516 H - Speedometer Signal Circuit Malfunction
60 IPC - U1160 H - Loss of Communications with LDCM
A0 LDCM B2282 H - Battery #1 Fault DCM-LEFT
A0 LDCM B2284 H - Battery #2 Fault DCM-LEFT
A1 RDCM B2283 H - Battery #1 Fault DCM-RIGHT
A1 RDCM B2285 H - Battery #2 Fault DCM-RIGHT
A6 SCM No Comm
B0 RFA C2100 H C - Left Front TPM Sensor Malfunction -TPM
B0 RFA C2105 H - Right Front TPM Sensor Malfunction -TPM
B0 RFA C2110 H C - Right Rear TPM Sensor Malfunction -TPM
B0 RFA C2115 H C - Left Rear TPM Sensor Malfunction -TPM
B0 RFA U1255 H - Serial Data Line Malfunction -RFA
what the heck is going on with my car
Last edited by Lancer033; Oct 15, 2005 at 09:56 AM.
Le Mans Master
Joined: Apr 2001
Posts: 5,331
Likes: 39
your pcm code is the only one that is causing the check engine light. (possibly the IPC codes) I wouldn't worry about the L&R door control modules, the seat control module, or your tire pressures codes right now.
check you AIR tube that runs behind the intake to each side of your headers/manifold. they bolt together by the exhaust manifolds/headers and your gasket may be shot or the bolts have come loose.
check you AIR tube that runs behind the intake to each side of your headers/manifold. they bolt together by the exhaust manifolds/headers and your gasket may be shot or the bolts have come loose.
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 8,222
Likes: 0
From: Norfolk VA
ahh, SCM is seat control module - my sparco seat would explain that and I don't have sensors on the car, so that would explain those codes. I'll deal with the DCM later.
off to check the air tube
thanks
off to check the air tube
thanks
Le Mans Master
Joined: Jul 2002
Posts: 7,370
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From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
There is a check valve behind the intake manifold that looks like the one next to the left exhaust manifold, it's probably corroded and plugged up but you can get a new one at the dealership for around $20.
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
Originally Posted by FFR-Z06
There is a check valve behind the intake manifold that looks like the one next to the left exhaust manifold, it's probably corroded and plugged up but you can get a new one at the dealership for around $20.
Getting to the one behind the manifold is BITCH! I recommended this to a couple other Forum members and it worked for them.Remove the rubber hose that goes to that check valve, spray a good shot of Carb cleaner in there and blast it through with some compressed air and then spray in a good shot of WD-40, hook everything back up and see if that helps.
Beats disassembling all that stuff!
Let me know how you make out.
BC
Pro
Joined: Jun 2005
Posts: 593
Likes: 1
Originally Posted by Bill Curlee
Remove the rubber hose that goes to that check valve, spray a good shot of Carb cleaner in there and blast it through with some compressed air and then spray in a good shot of WD-40, hook everything back up and see if that helps.
BC
BC
If you have a air compressor you can take the hose off the right exhaust manifold and also where it Tees off from the left side of head and with air test to see if air goes from left to right but not right to left.
This also would pinpoint if the hose is leaking and check the gasket where AIR bolts to exhaust.
Problem is it might not be the checkvalve but instead is the front and rear O2s for that side are not working correctly and the short term fuel trim for that side then does not go to a sudden lean condition when AIR pump goes on.
Before ripping the valve out if you have a PCM scanner on a cold start watch what the right O2s and STFT report to know if its the valve or the O2s as the problem
Drifting
Joined: Jun 2002
Posts: 1,847
Likes: 1
From: Iowa
Cruise-In IV Veteran
Cruise-In V Veteran
Well, for what it's worth, out here in Iowa we had a couple pretty cold mornings and the tire pressure had dropped down below the sensor range tolerance setting (26#).
So I went out and pumped the four tires back up to 30#, plus a couple, just in case it got even colder.
Today, the temps were in the mid 80's and like you, I got an SES warning with the code that all 4 TPS had failed.
I found out that after having run the vette a while on the interstate, the tire pressure had exceeded 36# and kicked the sensor into default error mode, triggering an SES warning.
Let 4 pounds of air out of the tires solved the problem.
So I went out and pumped the four tires back up to 30#, plus a couple, just in case it got even colder.
Today, the temps were in the mid 80's and like you, I got an SES warning with the code that all 4 TPS had failed.
I found out that after having run the vette a while on the interstate, the tire pressure had exceeded 36# and kicked the sensor into default error mode, triggering an SES warning.
Let 4 pounds of air out of the tires solved the problem.
