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05568 mil request signal active check tcm for error. P1624 not a plausible signal

I have a 2006 vw Jetta 2.5, my engine light came up the other day and the body shop gave me these codes: 05568 mil request signal active check tcm for error. P1624 not a plausible signal What's that mean? Your help is greatly appreciated.

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First off, let's simply define the OBD-II Trouble Codes:
Yes, 18032/P1624/005668 are the three codes that indicate "MIL Request Signal Active."
So, what does THAT mean (in plain English)??? This means that Fault Codes are stored in the TCM. SO WHAT'S THE SOLUTION?
MyAirbags has a reset solution for 04-07 VW Jetta 1.8L/2.0L as well as the VW Jetta 02-06 2.5L/2.8L
You need to have the TCM reset to its original status.

Posted on Nov 21, 2018


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Posted on Jan 02, 2017

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SOURCE: I have a 2008 VW Passat. When the engine light came on I stopped at Autozone and they gave me the following codes: P0089, P0642, P2004. Anyone know what they mean?


Posted on May 05, 2009

  • 3085 Answers

SOURCE: 2003 Jetta 2.0 L Engine, MIL and EPC Lights ON

Probably a bad COIL-PACK

Posted on Sep 12, 2009

  • 1986 Answers

SOURCE: My check engine light is on for my 2006 audi a4

Your MAF may be dirty and needs to be cleaned or replaced. You may have a vacuum leak.

In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect all vacuum and PCV hoses, replace if necessary
Check for a dirty fuel filter and proper fuel pressure

Posted on Oct 06, 2009

  • 202 Answers

SOURCE: have this code PO171, what does this mean.

Not sure that the O2 sensor was bad. It sounds like it was telling you that side of the exhaust system was picking up a lean mixure at the O2 sensor. The O2 sensor was doing its job by telling you the mixture changed. If the O2 sensor was bad, it would say low voltage range for that sensor, or open curcuit.
Now the car has had time to do its diagnostic sweep, it is telling you the same thing, but from a different sensor...the fuel mix is too lean. Air/spark/and fuel is what you need in the correct amounts. In your car, the ECM engine control module controls this by taking readings from all the sensors several hundred times a second.
Mechanically, you have a few options. Change the fuel filter...under the car on the passenger side. It is an easy job.
Change the fuel pressure regulator. This keeps the fuel at 4 BAR so the fuel injectors can do their job correctly. This job just needs a screw driver to pop off the clip that holds it in place. No hoses need to be removed. It is on top of the intake manifold, in-line with a metal fuel line and a rubber one.
The fuel injectors could be clogged up on one side of the engine. Run some fuel injector cleaner through a tank of gas. Also, listen for a constant ticking sound at each injector. If one sounds off PAR, then replace it.
The fuel pump may not be giving you enough power. However, the readings seem to be localized to one side, so I doubt it.
Start with the easiest thing, and see if it works. Also, you will need to get yourself a VAG scan tool. It is the only one with codes in it for all of your VW systems, not just engine codes like the ODB scanners. You can get a nice one for $50 on-line.
Good Luck!

Posted on Feb 24, 2010

  • 976 Answers

SOURCE: Have a 2006 VW Jetta 2.5. Engine emission warning

you need to pull the codes and go from there

Posted on Mar 20, 2010

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1 Answer

O/d off lite is blinking and got P1624 code (kia spectre)

code p 1624 refers to MIL request signal---TCM to ECM=== causes ---TCM trouble codes stored
it also refers to engine coolant blower motor relay low speed ---circuit malfunction===causes wiring--- relay---ECM
check the wiring and connections from the TCM ( transmission control module ) to the ECM as you have stated the O/D light is showing
other than that exchange the ECM with a known good unit and see if that rectifies the problem

Jun 28, 2016 | Cars & Trucks

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Engine car code P1624 lights up

P1624MIL Request Signal Active, Probable cause = Trouble code(s) stored in other system(s). call dealer to find out more info. Good-day!

Apr 30, 2014 | Volkswagen Golf Cars & Trucks

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Diagnostic code p1624

Hi there:
DTC P1624 - MIL Request Signal active

This code is only the TCM (Transmission Control Module) telling the ECM (Engine Control Module) to turn on the check engine light.

If you don't have other codes there, could be a Communication Lost from the TCM; first I suggest to check all fuses and good harnesses conections correctly.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Jul 06, 2012 | 1998 Saab 900

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Code P0700

P0700 = TCU request for 'MIL' on (IE transmission control unit has detected a fault and wants you to know about it.)


A communication line exists between the Engine Control Module(ECM) and the Trans-axle Control Module (TCM). The sole purpose of this communication line is for the TCM to notify the ECM to activate the Malfunction Indicator Lamp (MIL) when a serious trans-axle failure has occurred.

DTC Description
If the signal "MIL ON" is requested from TCU or it is no signal from TCU, the ECM judged as a fault and DTC is set.

Kia's first suggestion is to check for damaged wiring or connectors.

Try this: Disconnect your battery for about 5 minutes to clear the fault. Then take it for a spin and see how it shifts... good luck.

Jan 11, 2012 | 2006 Kia Optima

1 Answer

Hi i got an error code of p1611 thank u

P1611 =
MIL request signal circuit low input MIL-on Request Line

This code is set when the MIL On Request from the TCM (Transmission Control Module) has/had a problem getting the information to the ECU (Engine Control Module). In the 98 Elantra, there are two separate computer modules; one for the engine, the other for the transmission. (both located under the dash Driver's side. The diagnostic procedure specifies the wiring between the ECM & TCM be checked for any damage/defects. If none found, then replace the TCM with a new one to see if the problem (code) occurs again. If communication between TCM & ECM is corrected, you should have a ****** code related to the MIL On Request from the TCM (****** codes begin with P07 w/the next two digits (??) identifying the specific transmission component/malfunction).

You can also Go to and register your vehicle by VIN #.. you'll then have access to wiring diagrams, shop & owner manuals, service bulletins, campaigns, illustrations and procedures, etc

Sep 14, 2011 | 1998 Hyundai Elantra

1 Answer

1999 kia sportage stalled while in park will not refire codes are p1115 and p1624

p1115 is a coolant temperature signal from ECM to TCM. p1624 is MIL request from ECM to TCM. Did the vehicle overheat? If so check the temperature sensor and the thermostat. Some vehicles will overheat and shut the engine off until the computer is reset. But with both codes involving the same computer modules the best bet might be to rescan the computer and reset it. Both modules might need to be changed.

Feb 03, 2010 | 1999 Kia Sportage

1 Answer

Trouble Codes

1. VW VAG type 5 digit fault code 19497 = EOBD type P3041 fault code:
Fault location = CAN data bus, instrumentation - implausible Engine Coolant Temperature (ECT) signal
Probable cause = Wiring, matching resistor in Engine Control Module (ECM)

2. VW VAG type 5 digit fault code 18032 = EOBD type P1624 fault code:
Fault location = Malfunction Indicator Lamp (MIL) - request signal active
Probable cause = Trouble code(s) stored in other system(s)

3. VW VAG type 5 digit fault code 01039:
Fault location = Coolant Temperature Sensor (G2)
Probable cause = Open or Short to Plus, Short to Ground - Intermittent

4. VW VAG type 5 digit fault code 01304:
Fault location = Radio
Probable cause = No Communication

5. EOBD type P0761 fault code:
Fault location = Shift Solenoid C
Probable cause = Performance or Stuck OFF

Feb 03, 2010 | 2002 Audi A4

1 Answer

Got a code p1624 on my 2000 kia sportage with is it and what does it do.

Per the manual it states: MIL Request Signal from TCM to ECM. Which means there is a signal fault between the Transmission Control Module to the Emission Control Module. If you can, take it to the dealer for repair as they have the parts on hand and are most familiar with their vehicles.
Good luck to you

Oct 17, 2009 | 2000 Kia Sportage

1 Answer

Hold lite and and a p1624 code on a 2001 sportage

Code number p1624 is MIL Request Signal from TCM to ECM. which means malfunction indication light(MIL) is requesting a signal from your engine control module(ECM) or Transmission control module(TCM) i would reccomend u take it to the dealership to get it checked out.

Jun 09, 2009 | 2001 Kia Sportage

2 Answers

Trans range sensor circuit malfunction

Transaxle Range Sensor Circuit Malfunction (PRNDL Input).  

Check for: _ Possibly a connector near the shift lever has come loose/dirty contacts, or there is a broken wire from it somewhere going to the TCM 
- Corroded or faulty Range Switch. - Open between Meter Fuse and Range Switch (C136-4).
- Open between Range Switch (C136) and TCM (C229) on one or more circuits. 
- Short to Battery between Range Switch (C136) and TCM (C229) on one or more circuits. 
- Short between two or more wires between Range Switch (C136) and TCM (C229). 

If Meter Fuse is blown, repair any shorts in the Meter Fuse circuit.

P1624 MIL Request Signal from TCM to ECM.This is only a request from TCM to ECM to turn the MIL on. The fault code is stored in the TCM.The Freeze Frame Data is stored in the ECM under the P1624 request code. Be sure to retrieve freeze frame data before clearing code P1624 from ECM. 
TCM = Transmission control module 
ECM = Engine control module (or more commonly known as ECU) 
MIL = Malfunction indicator light (more commonly "check engine light" or CEL) 

Good luck and hope this helps

May 05, 2009 | 2003 Kia Spectra

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