2006 H3: Service Stab Sys, Traction Failed, Reduced Power II.
Super Moderator
Joined: Jul 2007
Posts: 13,056
From: Boat Town USA MI
Just got the same with my 2008 Alpha: Running offroad (nothing too major, mostly fire roads with some decent ruts and ledges) in 4HI LOCK for about 2 hours. Suddenly got the SERVICE STAB SYS -- TRACTION FAILED -- REDUCED POWER message on the dash, along with the CEL and Stabilitrac light. Luckily, was already past the tougher sections and had only smooth dirt roads left; nursed it home, checked the codes; P0452 Evap Pressure Sensor, P0641 Sensor Reference Voltage A Open, P0106 Manifold Absolute Pressure. Clearing the codes doesn't change anything, it immediately throws them again when you start it up.
BTW, I know this was a thread from January, but I wasn't sure whether to bump or start my own. Seems if someone starts a new thread here, shouts of "use the search feature" come up, but if they bump an older thread, shouts of "this is an old thread, start your own" come up. If I'm wrong here, just let me know and I'll delete this and start a new one instead. Thanks.
BTW, I know this was a thread from January, but I wasn't sure whether to bump or start my own. Seems if someone starts a new thread here, shouts of "use the search feature" come up, but if they bump an older thread, shouts of "this is an old thread, start your own" come up. If I'm wrong here, just let me know and I'll delete this and start a new one instead. Thanks.
Glad you got your issues under control. Carry on.
Junior Member
Joined: Aug 2016
Posts: 4
Mine did the same thing
I've posted this in another thread but I thought I should post it here as well. I've just cleaned up the spark plugs with petrol and now she runs fine. Mine's a h3 3.7 litre 5 cyl 2007 model. Hope this helps. Good luck.
Senior Member
Joined: Jul 2012
Posts: 8,907
From: C-Town
No need to pull the plugs unless they are worn. Just use a better "petrol"
https://www.sunoco.com/quality-fuels/our-fuels/
Junior Member
Joined: Nov 2016
Posts: 4
Traction failed
Belated response
My problem is in the morning when starting the engine. I am pressing the race to the max then in a few seconds it is off. I repeated it for 15-20 minutes !! Until engine is running. Then I move. But never off while driving.
The same msg. Stab system, traction failed, reduced power
So what z ur advice pls ?
My problem is in the morning when starting the engine. I am pressing the race to the max then in a few seconds it is off. I repeated it for 15-20 minutes !! Until engine is running. Then I move. But never off while driving.
The same msg. Stab system, traction failed, reduced power
So what z ur advice pls ?
Junior Member
Joined: Nov 2016
Posts: 4
in cold timing and after long stop: msg: traction failed, reduced power, ..
Hello everyone!
I have my favorite car H3 model 2007. But, 5 to 6 months ago, I have the problem 5 months ago: in morning and after a long stop (7 to 8 hours), when I start the engine, it is stopped with the message on dash: service stab system, traction failed, reduced power.
if I instantly start the engine again, it did not start although all lights are on.
I wait for 20 to 30 seconds then I try starting engine. it works then stopped.
again after 20 second I start it again with pressing on the race roughly. and stopping again.
so, after 10 to fifteen minutes doing the same, it finally works.
this happens especially during the cold time with a long stop here in gulf.
any advice pls.
I have my favorite car H3 model 2007. But, 5 to 6 months ago, I have the problem 5 months ago: in morning and after a long stop (7 to 8 hours), when I start the engine, it is stopped with the message on dash: service stab system, traction failed, reduced power.
if I instantly start the engine again, it did not start although all lights are on.
I wait for 20 to 30 seconds then I try starting engine. it works then stopped.
again after 20 second I start it again with pressing on the race roughly. and stopping again.
so, after 10 to fifteen minutes doing the same, it finally works.
this happens especially during the cold time with a long stop here in gulf.
any advice pls.
Super Moderator
Joined: Jul 2007
Posts: 13,056
From: Boat Town USA MI
Belated response
My problem is in the morning when starting the engine. I am pressing the race to the max then in a few seconds it is off. I repeated it for 15-20 minutes !! Until engine is running. Then I move. But never off while driving.
The same msg. Stab system, traction failed, reduced power
So what z ur advice pls ?
My problem is in the morning when starting the engine. I am pressing the race to the max then in a few seconds it is off. I repeated it for 15-20 minutes !! Until engine is running. Then I move. But never off while driving.
The same msg. Stab system, traction failed, reduced power
So what z ur advice pls ?
Please use the SEARCH function.
Junior Member
Joined: Apr 2012
Posts: 1
Loosing my mind with this H3!
Olds & Hummerz,
Here is what I've done,
Replaced:
Throttle body (gone thru 3, in passed 6 years),
replaced pedal assembly,
speed sensor,
crank sensor,
replaced transmission,
encoder motor (3 again),
PCM (once already),
camshaft sensor,
radiator,
timing chains (front & rear),
several coils,
plugs,
cleaned ABS sensors,
replaced front wheel bearings,
All new A/C system,
Need to replace worn CV shafts....
Need to replace worn rack & pinion....
Problem:
Service Stab System
Traction Control,
Reduced Power Mode
I am fixing to rip out this POS 5 cylinder and drop in an ls1, I just wanted to keep this thing original.
Won't clear codes anymore, TCM (throttle body) says it has a 2.5v (high reading, think it should be 0v) and the other reading is the 5v for it, chased all the wires, all seem good.
Sorry don't recall the codes right now, need to hook up the OBD and get back to you.
Any other suggestions?
Here is what I've done,
Replaced:
Throttle body (gone thru 3, in passed 6 years),
replaced pedal assembly,
speed sensor,
crank sensor,
replaced transmission,
encoder motor (3 again),
PCM (once already),
camshaft sensor,
radiator,
timing chains (front & rear),
several coils,
plugs,
cleaned ABS sensors,
replaced front wheel bearings,
All new A/C system,
Need to replace worn CV shafts....
Need to replace worn rack & pinion....
Problem:
Service Stab System
Traction Control,
Reduced Power Mode
I am fixing to rip out this POS 5 cylinder and drop in an ls1, I just wanted to keep this thing original.
Won't clear codes anymore, TCM (throttle body) says it has a 2.5v (high reading, think it should be 0v) and the other reading is the 5v for it, chased all the wires, all seem good.
Sorry don't recall the codes right now, need to hook up the OBD and get back to you.
Any other suggestions?
Super Moderator
Joined: Jul 2007
Posts: 13,056
From: Boat Town USA MI
Olds & Hummerz,
Here is what I've done,
Replaced:
Throttle body (gone thru 3, in passed 6 years),
replaced pedal assembly,
speed sensor,
crank sensor,
replaced transmission,
encoder motor (3 again),
PCM (once already),
camshaft sensor,
radiator,
timing chains (front & rear),
several coils,
plugs,
cleaned ABS sensors,
replaced front wheel bearings,
All new A/C system,
Need to replace worn CV shafts....
Need to replace worn rack & pinion....
Problem:
Service Stab System
Traction Control,
Reduced Power Mode
I am fixing to rip out this POS 5 cylinder and drop in an ls1, I just wanted to keep this thing original.
Won't clear codes anymore, TCM (throttle body) says it has a 2.5v (high reading, think it should be 0v) and the other reading is the 5v for it, chased all the wires, all seem good.
Sorry don't recall the codes right now, need to hook up the OBD and get back to you.
Any other suggestions?
Here is what I've done,
Replaced:
Throttle body (gone thru 3, in passed 6 years),
replaced pedal assembly,
speed sensor,
crank sensor,
replaced transmission,
encoder motor (3 again),
PCM (once already),
camshaft sensor,
radiator,
timing chains (front & rear),
several coils,
plugs,
cleaned ABS sensors,
replaced front wheel bearings,
All new A/C system,
Need to replace worn CV shafts....
Need to replace worn rack & pinion....
Problem:
Service Stab System
Traction Control,
Reduced Power Mode
I am fixing to rip out this POS 5 cylinder and drop in an ls1, I just wanted to keep this thing original.
Won't clear codes anymore, TCM (throttle body) says it has a 2.5v (high reading, think it should be 0v) and the other reading is the 5v for it, chased all the wires, all seem good.
Sorry don't recall the codes right now, need to hook up the OBD and get back to you.
Any other suggestions?
Forgot to mention, a LS1 won't fit, not without a LH8 oil pan. And even then, you will have substantial steering geometry issues.
Last edited by Doc Olds; Nov 16, 2016 at 10:24 AM.
Junior Member
Joined: Dec 2016
Posts: 2
Vehicle: 2006 H3 3.5L basic (manual), 82K miles
Same issues: loss of power, traction failure light comes on. Also noticed mpg dropped from 13 city to 7 city and exhaust smell continuous during operation.
April 2016 Mechanic pulled codes PO101 MAF sensor, PO326 Knock sensor and PO068 Throttle body. Examination found catalytic converter had broken and was choking engine exhaust. Replaced catalytic converter and downstream O2 sensor (437 converter, 130 O2 sensor, 3 hours labor @ 89/hour total 834). Car back to normal and still running no issues Dec 2016.
Not sure you have exact same problem, but seemed similar.
Same issues: loss of power, traction failure light comes on. Also noticed mpg dropped from 13 city to 7 city and exhaust smell continuous during operation.
April 2016 Mechanic pulled codes PO101 MAF sensor, PO326 Knock sensor and PO068 Throttle body. Examination found catalytic converter had broken and was choking engine exhaust. Replaced catalytic converter and downstream O2 sensor (437 converter, 130 O2 sensor, 3 hours labor @ 89/hour total 834). Car back to normal and still running no issues Dec 2016.
Not sure you have exact same problem, but seemed similar.
