Reduced Engine Power
Instructor
Joined: Jun 2009
Posts: 155
Likes: 20
From: Brentwood Tn
Reduced Power
The TCS code references the ABS brakes. The other code could be he main PCM or the body control module. Check under hood. There are wires coming up lower drivers side that tie into the ABS brakes and the Throttle body. If they are loose or broken
the car will go into reduced power mode. If your balancer is failing it can hit those wires and cut them. It happened on my 2001 Z.
the car will go into reduced power mode. If your balancer is failing it can hit those wires and cut them. It happened on my 2001 Z.
Melting Slicks
Joined: Jul 2006
Posts: 2,332
Likes: 31
From: Silver Spring MD
Can also be a DBW component
A decade ago when the C5 was pretty new I got the reduced engine power msg on the DIC along with the car not going over about 25 or 30 MPH. The dealership traced the problem to the Accelerator Pedal and replaced it. That particular code never returned. Just replaced an Ignition Switch which caused a crank but no start condition, DIC code pointed to the DBW TAC. Replaced the TAC and car still wouldn't start. Replaced the back of the Ignition Switch (electrical part only) and car started immediately. Could also be a broken or shorted wire. Check at connectors for possible separated wires.
