Service active handeling warning and limp mode issue
Thread Starter
4th Gear
Joined: Aug 2008
Posts: 4
Likes: 0
From: Palo Alto California
Service active handeling warning and limp mode issue
I'm getting 4 codes (all with H at the end) in my '03 Z06:
-P0507 Idle Speed High
-P1516 Command vs Actual Throttle Position Performance (TAC Module)
-C1278 TCS Temporarily Inhibited By PCM
-C1293 DTC C1291/C1292 Set Curnt/Prev Ign Cylce
3 times in the last month of driving ~500 miles, the car will seemingly randomly go into limp mode with error messages on the dash reading: "reduce engine power, service active handeling/TCS system". Every time I've been able to restart the car after stopped and it runs OK. Twice this happened on the freeway and I was luckily able to pull off in a safe place to restart the car while stopped because restarting while it was still in motion would put it back to limp mode.
Not sure if this is related, but around the same time this started, my speedo started working intermittently and only accurately reads my speed going over 50mph, any less mph and it bounces around or reads 0mph.
Any help is truly appreciated!
-P0507 Idle Speed High
-P1516 Command vs Actual Throttle Position Performance (TAC Module)
-C1278 TCS Temporarily Inhibited By PCM
-C1293 DTC C1291/C1292 Set Curnt/Prev Ign Cylce
3 times in the last month of driving ~500 miles, the car will seemingly randomly go into limp mode with error messages on the dash reading: "reduce engine power, service active handeling/TCS system". Every time I've been able to restart the car after stopped and it runs OK. Twice this happened on the freeway and I was luckily able to pull off in a safe place to restart the car while stopped because restarting while it was still in motion would put it back to limp mode.
Not sure if this is related, but around the same time this started, my speedo started working intermittently and only accurately reads my speed going over 50mph, any less mph and it bounces around or reads 0mph.
Any help is truly appreciated!
Thread Starter
4th Gear
Joined: Aug 2008
Posts: 4
Likes: 0
From: Palo Alto California
Thanks for sharing. BCM appears fine and no water issues near it or the fuse box. My dash doesn't go crazy either, the car just goes into limp mode with "reduce engine power/service active handling" warnings. Upon restart everything is usually back to normal.
I did just start getting the "service column lock" warning yesterday, not sure if it's related?
I did just start getting the "service column lock" warning yesterday, not sure if it's related?
Thread Starter
4th Gear
Joined: Aug 2008
Posts: 4
Likes: 0
From: Palo Alto California
Update since the original post - same problem is still happening intermittently but I got more codes last time I checked. All codes below:
PCM P1515 - Control*Module*Throttle*Actuator*Positio n*Performance
TSC C1221 - LF*Wheel*Speed*Sensor*Input*Signal*is*0
TCS C1222 - RF*Wheel*Speed*Sensor*Input*Signal*is*0
TCS C1248 - DRP*Disabled*
TCS C1278 - TCS*Temporarily*Inhibited*By*PCM
LDCM B2282 - 12V*Power*Feed*#1*Fault
LDCM B2284 - 12V*Power*Feed*#2*Fault
RDCM B2283 - 12V*Power*Feed*#1*Fault
RDCM B2285 - 12V*Power*Feed*#2*Fault
RDCM B2265 - Mirror*Vertical*Position*Sensor*Fault
PCM P1515 - Control*Module*Throttle*Actuator*Positio n*Performance
TSC C1221 - LF*Wheel*Speed*Sensor*Input*Signal*is*0
TCS C1222 - RF*Wheel*Speed*Sensor*Input*Signal*is*0
TCS C1248 - DRP*Disabled*
TCS C1278 - TCS*Temporarily*Inhibited*By*PCM
LDCM B2282 - 12V*Power*Feed*#1*Fault
LDCM B2284 - 12V*Power*Feed*#2*Fault
RDCM B2283 - 12V*Power*Feed*#1*Fault
RDCM B2285 - 12V*Power*Feed*#2*Fault
RDCM B2265 - Mirror*Vertical*Position*Sensor*Fault
