HELP...Car stalled..."REDUCED ENGINE ???" Codes...
Thread Starter
Race Director
Joined: Dec 2004
Posts: 14,358
Likes: 1
From: Medford NJ
HELP...Car stalled..."REDUCED ENGINE ???" Codes...
Car stalled on me and the DIC said something like Reduced Engine ???
The codes I got were the following:
10 PCM - P1518H
28 TCS - C1278H
60 IPC - B0521H and U1160H
A6 SCM - No Comm.
Any ideas?....
The codes I got were the following:
10 PCM - P1518H
28 TCS - C1278H
60 IPC - B0521H and U1160H
A6 SCM - No Comm.
Any ideas?....
Le Mans Master
Joined: Aug 2001
Posts: 6,725
Likes: 5
From: Colesville MD
What happend when it stalled? Did you hit a bump or anything? Sounds like an electrical issue, like a senor plug came lose. I would clear the codes, un hook the battery for about 15 minutes, re connect, and check the codes again. If you still have any, post them here.
Drifting
Joined: Oct 2003
Posts: 1,540
Likes: 0
From: bloomfield nj
Originally Posted by cjlaw73
Car stalled on me and the DIC said something like Reduced Engine ???
The codes I got were the following:
10 PCM - P1518H
28 TCS - C1278H
60 IPC - B0521H and U1160H
A6 SCM - No Comm.
Any ideas?....
The codes I got were the following:
10 PCM - P1518H
28 TCS - C1278H
60 IPC - B0521H and U1160H
A6 SCM - No Comm.
Any ideas?....
well your pcm fault is because the tac controller stopped talking to the pcm. your tcs is because the pcm stopped talking to the tac module.the 521 is the tach signal to the cluster and 1160 is loss of communication to the left door control module.
first,have you suffered from the "leaking battery" syndrome,if so,i suggest you look pull the r/f inner fender peice and look at that harness first to see if the acid ate it up.the serial data connectors are all above the bcm.other possibilities-loose/bad battery connections,poor ground,etc.
did the car start right back up?
Thread Starter
Race Director
Joined: Dec 2004
Posts: 14,358
Likes: 1
From: Medford NJ
Originally Posted by dpd
well your pcm fault is because the tac controller stopped talking to the pcm. your tcs is because the pcm stopped talking to the tac module.the 521 is the tach signal to the cluster and 1160 is loss of communication to the left door control module.
first,have you suffered from the "leaking battery" syndrome,if so,i suggest you look pull the r/f inner fender peice and look at that harness first to see if the acid ate it up.the serial data connectors are all above the bcm.other possibilities-loose/bad battery connections,poor ground,etc.
did the car start right back up?
first,have you suffered from the "leaking battery" syndrome,if so,i suggest you look pull the r/f inner fender peice and look at that harness first to see if the acid ate it up.the serial data connectors are all above the bcm.other possibilities-loose/bad battery connections,poor ground,etc.
did the car start right back up?
Thread Starter
Race Director
Joined: Dec 2004
Posts: 14,358
Likes: 1
From: Medford NJ
Originally Posted by YELLOHHH
What happend when it stalled? Did you hit a bump or anything? Sounds like an electrical issue, like a senor plug came lose. I would clear the codes, un hook the battery for about 15 minutes, re connect, and check the codes again. If you still have any, post them here.
Good idea. I don't remember hitting a bump....hmmmm.
Thread Starter
Race Director
Joined: Dec 2004
Posts: 14,358
Likes: 1
From: Medford NJ
TTT.
I 1st noticed some potential electrical problems a couple of months ago when my headlights would briefly dim when I applied the brakes or turn signals. I can even hear when the fuel pump hesitates it correlates with a brief headlight dimming. Thats when I brought it to a delaership and they fix a battery cable.
I 1st noticed some potential electrical problems a couple of months ago when my headlights would briefly dim when I applied the brakes or turn signals. I can even hear when the fuel pump hesitates it correlates with a brief headlight dimming. Thats when I brought it to a delaership and they fix a battery cable.
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,079
From: Guelph, Ontario
Sounds like what happened to me yesterday!
The problem began last week, with a persistant check engine light, and a slight rough idle at times. Then on Tuesday morning the idle got much worse and it began sputtering at all speeds, plus the check engine light was actually flashing!
I drove it to my favorite performance shop and they found a whole whack of codes. So after doing some troubleshooting, they ended up getting me a new PCM. They uploaded my LS1 edit tuning and the car ran great. But then on Thursday morning I pulled up to a light and the car just stalled, and the REDUCED ENGINE POWER, SERVICE TCS, SERVICE ABS codes kept flashing. I had it towed to the shop and they pulled the PCM, sent it back to a GM dealer to get it reflashed and checked out. It checked out fine, but the car still won't start. So now they suspect it's the wiring harness. It looks like the previous owner's battery must've leaked onto that area at some point in time, causing all of this nonsense.
The problem began last week, with a persistant check engine light, and a slight rough idle at times. Then on Tuesday morning the idle got much worse and it began sputtering at all speeds, plus the check engine light was actually flashing!
I drove it to my favorite performance shop and they found a whole whack of codes. So after doing some troubleshooting, they ended up getting me a new PCM. They uploaded my LS1 edit tuning and the car ran great. But then on Thursday morning I pulled up to a light and the car just stalled, and the REDUCED ENGINE POWER, SERVICE TCS, SERVICE ABS codes kept flashing. I had it towed to the shop and they pulled the PCM, sent it back to a GM dealer to get it reflashed and checked out. It checked out fine, but the car still won't start. So now they suspect it's the wiring harness. It looks like the previous owner's battery must've leaked onto that area at some point in time, causing all of this nonsense.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Race Director
Joined: Dec 2004
Posts: 14,358
Likes: 1
From: Medford NJ
Originally Posted by Patman
Sounds like what happened to me yesterday!
The problem began last week, with a persistant check engine light, and a slight rough idle at times. Then on Tuesday morning the idle got much worse and it began sputtering at all speeds, plus the check engine light was actually flashing!
I drove it to my favorite performance shop and they found a whole whack of codes. So after doing some troubleshooting, they ended up getting me a new PCM. They uploaded my LS1 edit tuning and the car ran great. But then on Thursday morning I pulled up to a light and the car just stalled, and the REDUCED ENGINE POWER, SERVICE TCS, SERVICE ABS codes kept flashing. I had it towed to the shop and they pulled the PCM, sent it back to a GM dealer to get it reflashed and checked out. It checked out fine, but the car still won't start. So now they suspect it's the wiring harness. It looks like the previous owner's battery must've leaked onto that area at some point in time, causing all of this nonsense.
The problem began last week, with a persistant check engine light, and a slight rough idle at times. Then on Tuesday morning the idle got much worse and it began sputtering at all speeds, plus the check engine light was actually flashing!
I drove it to my favorite performance shop and they found a whole whack of codes. So after doing some troubleshooting, they ended up getting me a new PCM. They uploaded my LS1 edit tuning and the car ran great. But then on Thursday morning I pulled up to a light and the car just stalled, and the REDUCED ENGINE POWER, SERVICE TCS, SERVICE ABS codes kept flashing. I had it towed to the shop and they pulled the PCM, sent it back to a GM dealer to get it reflashed and checked out. It checked out fine, but the car still won't start. So now they suspect it's the wiring harness. It looks like the previous owner's battery must've leaked onto that area at some point in time, causing all of this nonsense.
Also wanted to thank Craig (cajung) who I bought the car off of for calling. He must have felt bad after he read the thread and called me to see if he could help out - classy guy!
I'll report back after the service check.
