my 2008 wrangler has been running great evr since i rolled it off the dealer lot with 10 miles on the odometer, but a few days ago the ETC warning light along with the ESP light have turned on at the same time and i have not been able to accelerate. i pulled over and turned off the ignition and restarted my wrangler and the lights went out but once in a while they will come back on. Does anybody have any info on what is wrong because tommorow i am taking it to the dealership but i am stationed in germany and the cost of repairs at a german dealership are outrageous.

 

Could be a bad throttle, bad pedal, or anything in between.

 

Mostlikely an accelerator pedal position sensor. Prolly corrosion/bad connection. If u r mechanically inclined, try removing pedal and cleaning off sensore with electrical or brake cleaner and ya might get lucky and fix it for 5 bucks. Goodluck

 

I would actually guess your throttle body may be dirty. Pull the intake tube off and inspect the throttle body blade to make sure there isn't any build-up on it before paying to replace parts

 

First check for broken linkages/ slipped off cables/ jammed pins and the like by pulling off the intake pipe at the front of th throttle body.
Then get a buddy to press the accellerator while the jeeps running with your head under the hood.
You should see the butterfly move inside the throttle body. Be carefull where the pipe is left sitting. You don't want it falling into the belts and fans.
If it doesn't move you have a problem in the throtle control circuit.
Get your mate out of the drivers seat and away from the accalerator ant try pushing it with your fingers. It should rev up and down as it opens and closes.

 

Check for codes, and post them. It may not be a problem with the ETC. Could be related to something with the ESP side of things, which can also control the throttle.

 

Assuming you have an automatic trans.

It has happened to me when I was driving with two feet. One on the gas and one brake, it thows a code it puts it in to limp mode and it shifts funny. I have a super chips tuner, cleared the codes and all was well after that. So now I drive with one foot.

 

Thanx guys for the feedback. I actaually took it to the dealer and he spit some jargon about my throttle body spacer being the problem although i have had it for over two years and never had a problem. So he checked the codes and nothing came up so he said. so i ran a code check myself and P2173 came up. i cleaned the components to my throttle body and spacer and the etc light came on again along with the esp and then went out after i turned off the ignition. so then i went to check the code to see what it was online and now my JK is showing no codes or faults at all. I guess i will wait a day or two to see if i have any further problems. Any advice on the new developments?

 

You didn't mention at the beginning you have a throttle body spacer. The first thing I would do is remove it and go back to the original configuration, making sure the throttle body has no leaks.

Here is some info on the code you posted.
More than once, the troubleshooting procedure says a vacuum leak is the most likely cause of this DTC. Most of the rest of the possible causes are electrical in nature.

P2173-HIGH AIRFLOW/VACUUM LEAK DETECTED (SLOW ACCUMULATION)

• When Monitored: Ignition on and engine running with no MAP Sensor DTCs.
• Set Condition: A large vacuum leak has been detected or both of the TP Sensors have failed based on their position being 2.5 volts and the calculated MAP value is less than the Gas Flow Adaptation value is too high. One trip fault the code will set within 5 seconds. ETC light will flash.

[TABLE]
[TR]
[TD="bgcolor: white, align: center"]Possible Causes
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]VACUUM LEAK
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"](F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]RESISTANCE IN THE (K1) MAP SIGNAL CIRCUIT
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"](K1) MAP SIGNAL CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]RESISTANCE IN THE (K900) SENSOR GROUND CIRCUIT
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUIT
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"](F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]RESISTANCE IN THE TP SENSOR SIGNAL CIRCUIT
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]TP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]RESISTANCE IN THE (K922) TP RETURN CIRCUIT
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]MAP SENSOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]TP SENSOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]POWERTRAIN CONTROL MODULE (PCM)
[/TD]
[/TR]
[/TABLE]

1. ACTIVE DTC [HR][/HR] NOTE: The most likely cause of this DTC is a vacuum leak.
NOTE: Diagnose any 5-Volt Supply, TP Sensor, Oxygen Sensor, Fuel related, or MAP Sensor DTCs before continuing.
NOTE: The throttle plate should be free from binding and carbon build up.

Start the engine and allow it to reach normal operating temperature.
With a scan tool, select View DTCs.

Is the DTC Active at this time?


2. VACUUM LEAK [HR][/HR] NOTE: This code is enabled on engines with a plastic intake manifold and is intended to limit the maximum engine speed if a large crack occurs.
NOTE: A large vacuum leak is most likely the cause of this DTC.

Inspect the Intake Manifold and Throttle body for leaks and cracks.
Inspect the Power Brake Booster for any vacuum leaks.
Inspect the PCV system for proper operation or any vacuum leaks.
Inspect the MAP Sensor for proper installation.

Were any vacuum leaks found?

 

Also to add i have a hi flow intake from K&N if that would make a diffrence.