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How can I solve fault code 16555 on my 02 plate VW golf 1.6? Had throttle body cleaned and EGR value reset due to idle surging and emmission light coming on. After driving for a week emmision light is back on and car cuts out sometimes when slowing down for corners and parking - can you assist?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 625 Answers

SOURCE: 2000 mazda miata r&r throttle body

se if egr is controled by vacium or electric
if it is by vacium then locate the egr solenoide and make sure it has vacium in one hose w/ engine runing if it does then replace solenoide

Posted on May 31, 2008

bryan7953
  • 7 Answers

SOURCE: 2.5l iron duke will not idle

Scan again & check reading of the ECT sensor,coolent sensor as it may be reading to cold for present temp & just dumping fuel as it is seeing -30c all the time.I as well own a iron duke(1987)

Posted on Apr 07, 2009

  • 20 Answers

SOURCE: 02 plate vw golf door

It is a common problem
http://forums.vwvortex.com/zerothread?id=1542461&page=1
Usually it is a result of breakage of the soldered joints to the
module in the door. I guess that the part of the module with
the pins are fixed to the door, but the board that they are
soldered to is not fixed. So as one shuts the door, over time,
the pins poke further through the board and break the (rather
weak) soldering that holds them to the board. Then the board
is loose, and an intermittent fault prevails. There are six solder
joints that are prone to this failiure. Particularly two of the pins
have a tendency to poke too far and break their soldered
connections. The symptoms (never locking, appearing locked
even when not locked, being unable to unlock etc) may depend
upon which of the joints have broken.
Sometimes it can be one of the four (?) microswitches that fails.
This will usually (but there are hacks) *require* you to replace
the module.

But particularly when the fault is intermittent, it seems fair to
suspect a break in the soldering which, if you can get the door
open, can be fixed with a soldering Iron.

Thus....

You can buy a whole new module (at about 100-150USD) plus
installation (perhaps another 100 USD). Or you can open up
the door (see link above) and try re-soldering the joints yourself.
Several people have said that re-soldering works for them.

We are going to ask our garage to open up the door and try
and do the soldering ourselves before askign them to order a
new module.

Posted on Apr 09, 2009

  • 1 Answer

SOURCE: My VW golf has exhaust emmission

good chance your lambda sensor is goosed

Posted on Oct 20, 2009

  • 2 Answers

SOURCE: Corvette 1990 5.7L Slow Idle Automatic

i had almost the same problem i changed my fuel pump and fuel filter and it worked u mite try that first.

Posted on Feb 10, 2010

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1 Answer

Cannot get my 2009 colorado into program mode to set tps sensor


What engine ? Are you talking about Throttle Learn ? Did you replace throttle body ?
The engine control module (ECM) learns the idle position of the throttle plate to ensure the correct idle. The learned airflow values are stored within the ECM. These values are learned to adjust for production variation and will continuously learn during the life of the vehicle to compensate for reduced airflow due to coking. Anytime the throttle body airflow rate changes, for example due to cleaning or replacing, the values must be relearned.
A vehicle that had a heavily coked throttle body that has been cleaned or replaced may take several drive cycles to learn out the coking. To accelerate the process, the scan tool has the ability to reset all learned values back to zero. A new ECM will also have values set to zero.
The idle may be unstable or a DTC may set if the learned values do not match the actual airflow.

Throttle Learn
With Scan Tool-Reset
Ignition ON, engine OFF. With a scan tool, perform the Idle Learn Reset in Module Setup.
Start the engine, monitor the TB Idle Airflow Compensation parameter. The TB Idle Airflow Compensation parameter value should equal 0 percent and the engine should be idling at a normal idle speed.
? If the engine is not idling normally, proceed with the Learn portion of the diagnostic.
Clear the DTCs and return to the diagnostic that referred you here.

May 16, 2017 | Cars & Trucks

1 Answer

What is code scan p1582 on a 2001 volkswagen beetle?


P1582 Idling Speed Regulation Adaptation Limit Reached

This fault can be caused by several factors, one being a dirty throttle body. Another could be a small vacuum leak. The last could be a loose timing belt. First I would check and make sure the timing belt is not too loose. Very common cause. Then if you are sure that you don't have any broken vacuum lines, and the PCV tube is not torn, then remove and clean the throttle body. Note that clearing the fault will not always keep it from coming back. You will need to disconnect both battery cables, and touch them together, this will cause the ECM to reboot and reset all learned values for idle adaptation. You can then clear the faults. If you fail to clear the learned values the fault will come right back as soon as you start the vehicle. Make sure you have the radio code as you will need to reset the anti theft code on the radio.maybe Super VAG K+CAN V4.8 can help you solve this problem.

Jul 01, 2012 | 2000 Volkswagen Beetle

3 Answers

The check engine light is on and the car is idling high and jerking while stopped?Does anyone know whats wrong with it. I have a 2009 chevy hhr. Thanks


No one is going to know what is wrong with it. You must find out why the engine light is on. The PCM has detected a fault in one or more of its systems. In order to know what the fault may be you must retrieve the codes stored in it. Most auto part stores will hook up a generic OBD II code reader for free. But since its an 09, it should be under warranty. If you tinker with it, can't fix it so then take it to the dealer, they may deny your warranty claim because you worked on it first.

Oct 14, 2011 | 2009 Chevrolet HHR

1 Answer

My 01 Acura MDX intermitently stalls and I can be immediately restarted. I had EGR codes & o2 codes. Allof those problems were corrrected. But the engine still continues to stall after highway driving...


This is still a EGR symptom coming up to a stop, Its not going to give you a code and it wont . This can only be found by a data stream, you can try these as a solution clean the throttle body and do a idle air control cleaning with a MAF cleaning, these should solve the problem But I am still sticking with EGR as a problem. But do a throttle body and idle air cintrol with a MAF cleaning,

May 06, 2011 | 2001 Acura MDX

1 Answer

95 intrepid with a rpm problem and my codes flashed 1 1 2 3 3 2 5 5 5


You have four fault code there...

Code 11
Description: Engine not cranked since last reset or no ignition reference signal detected during cranking
Power loss light: Off
Limp-in mode: None

Possible Causes:
Engine hasn't been cranked since last reset - Power was removed from the logic module (disconnected or dead battery, etc.) and the logic module has no memory of seeing a signal from the ignition reference sensor. Crank the engine and check for the code again. If the logic module saw a signal, the code will be cleared. This code will not show up if the sensor simply fails. The logic module must be reset and the engine cranked to see if the sensor is working.

Bad connection or wiring - Check the wiring and connections between the hall effect sensor (located underneath the distributer cap) and the logic module. Check the continuity of the two 3 conductor cables coming out of the sensor--these are prone to fatiguing and breaking inside the insulation where they exit the sensor if the cables are not properly tied down. You may be able to resolder them. Clean and regrease any corroded connectors with dielectric grease and repair any shorts. This code will not show up if the sensor simply fails. The logic module must be reset and the engine cranked to see if the sensor is working (see above).

Hall effect sensor failure- Check the ignition reference sensor and fuel injector sync sensor cables. They are the two, flat 3 conductor cables coming out of the sensor at the base of the distributer cap. These often fatigue where they exit from the sensor. Upon replacing the sensor, make sure the cables are clipped or tied to the distributor cap shroud (or elsewhere) so they do not swing around. This code will not show up if the sensor simply fails. The logic module must be reset and the engine cranked to see if the sensor is working (see above).


Code 23
Notes: For throttle body injected (N/A) models only

Description: Throttle body temperature sensor signal out of range
Power loss light: On
Limp-in mode: Throttle body temperature of 70^F is assumed

Possible Causes
Throttle body temperature sensor failure - The sensor should measure 9,120 ohms to 10,880 ohms at 77^F. This sensor is located on the side of the throttle body, below the throttle plate.

Bad connection or wiring - Check the wiring and connections between the sensor and the logic module (or SMEC). Clean and regrease any corroded connectors with dielectric grease.

Diagnostic Method
Trigger Parameters
- Sensor output less than 0.06V or greater than 4.98V
Results If Component Fails
Fault code 23 is stored, the power loss light is turned on, and the logic module will enter limp-in mode, assuming a throttle body temperature of 70^F.

Code 32
Description: Logic module did not see a change in air/fuel ratio when EGR circuit was activated
Power loss light: Off
Limp-in mode: None

Possible Causes
EGR valve stuck open or closed - If the vehicle fails emmisions, then the valve may be shut. If the enigne runs poorly at low rpm or at idle, the valve may be stuck open. It may be the valve or the transducer valve. Test the transducer valve vacuum output. At idle, the transducer valve vacuum should be mostly bled, and there should be very little, if any vacuum at the output. When the engine is revved, the vacuum should increase. If the transducer is functioning properly, replace the EGR valve.

Bad EGR solenoid or Canister purge/EGR solenoid - The solenoid is located in the right, front fender next to one to three other solenoids. See the Understanding Solenoids page for information about how to test and repair solenoids.

Bad connection or wiring - Check the wiring and connections between the solenoid and the logic module (or SMEC). Clean and regrease any corroded connectors with dielectric grease and repair any shorts.

Diagnostic Method
Trigger Parameters
- The EGR solenoid was deactivated, but the oxygen sensor reading did not change
Results If Component Fails
Fault code 32 is stored.

Code 55
Description: End of message
Power loss light: Off
Limp-in mode: None

Possible Causes
No further fault codes are stored. If this is the only code received, then there are no codes stored in memory. This code will always be given, even if nothing is wrong. If you do not get this code, then you may not be retreiving the codes properly, or the power loss light may be burnt out. The light should come on for 1 second when the ignition is initally turned on as a bulb test.

Diagnostic Method
Trigger Parameters
- No further codes in memory


Hope this helps (remember to rate this answer).

Apr 15, 2011 | 1995 Dodge Intrepid

1 Answer

What does the code po85 mean for a 1994 cadillac deville


It means that the throttle body is dirty and the deposits in the throttle bores are restricting air flow at idle to the point that the idle speed control has no more authority to maintain the correct idle speed.

Take the air cleaner off, hold the throttle wide open and look down the throttle bores. Spray the throttle bores with carb cleaner and scrub the bores and backside of the throttle blades with an old toothbrush. Cleaning the deposits off the bores and throttle blade backsides it will restore the idle air flow to the correct level. When the throttle body is clean, disconnect the battery negative cable for 60 seconds to reset the idle learn offsets to the "clean throttle body" default values.

While you are in the throttle body and looking down the bores....see the two tubes sticking up at you from the intake manifold floor just below the throttle blades...??? Those are the EGR tubes and they are NOT supposed to be full of carbon and crud. Rod them out thoroughly with a piece of stiff wire to remove the deposits. Go all the way down thru the tubes to the cast passage below and make sure that they are clean and unrestricted so that the proper amount of EGR can flow.

Turning the key to the run position extends the ISC anticipating a restart, so if the setting is incorrect it would not erase a hard code. Just turning the key to run would light up both the service soon and service now lights as a bulb check, in other words, letting you know the bulbs work. Do you have the factory service manual?

The ISC adjustment is simple on this car. With the engine running and at operating temperature, You raise the throttle arm slightly with your right hand and push the shaft of the ISC in to fully retract it with your left hand. With constant pressure on the ISC shaft it will slowly retract. The very second it bottoms, you quickly remove the wiring connector to the ISC. Now you should have a very low idle and a gap between the throttle arm and the tip of the ISC. Approx. 0.060 of an inch. Once you know the gap is correct, shut off the engine, wait 10 seconds and reconnect the ISC wiring. Restart the engine and the ISC is set to spec. The TPS setting must be verified at this time. At minimum idle, ISC not touching the throttle arm, and unplugged, the TPS should be reading approx .0 or .1. Once the ISC is reconnected, you should see a TPS reading of approx. .5 at idle. with the A/C off.

A hard code can be erased but will continue to reset as long as the reason for it has not been corrected. Idle learn procedures were designed into later year engines with multi port fuel injection to adjust idle regardless of the amount of coke build up within the throttle body. Your fuel injection system does not build up coke or deposits because the 2 injectors spray down thru the throttle body, effectively cleaning the throttle body while running. Alot of owners adjust the ISC as if it were a throttle stop screw on a carb. guessing as they go. The ISC and TPS "MUST" be in sync to get the best off throttle response and smoothest idle. Adjusting the ISC without verifying gap or TPS voltage usually results in a surging or too high warm idle. You say the car failed at idle. For what reason? CO or HC? or idle too high?

Tell us news.

Jul 20, 2010 | 1994 Cadillac DeVille

2 Answers

Starts idol rough and dies says running with rpm up let off it dies


do you have a check engine light on? if not try cleaning the throttle body follow the tube from the air cleaner box to the throttle take hose off open throttle plate and clean with carb cleaner and a tooth brush and a rag car will run rough after you do this may have to hold throttle open to start

Jun 15, 2009 | 2000 Pontiac Grand Prix

4 Answers

VW Polo Map sensor fault code idling pooly


Hi, I have a 2001 polo 1.4 mpi it lackes power when you hit a hill it just dies, It has had new cat, fuel filter, fuel pump and throttle body, but is still the same it just dose not want to give me full rev's?

Mar 30, 2009 | 2002 Volkswagen Golf

1 Answer

Idling problem


There is no idle screw or adjustment . It is fully controlled by the ECU. The throttle body will probably need cleaning and resetting .

Dec 13, 2008 | 2005 Volkswagen Golf

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