Question about 1999 Dodge Ram

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Idle adaptation limit reachead ..what can i do to fix this??

Check engine light on ..

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  • Master
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If it no longer can hold an idle , I would look for a vacuum leak that started small and has gotten larger

Posted on Apr 12, 2015

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6ya6ya
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Why has the idle adaptation limit been reached?


First scan with VAG-COM software capable and get the current storage codes; when the throttle body is replaced you most run a re-adaptation procedure... you can find more info at http://wiki.ross-tech.com/wiki/index.php/Throttle_Body_Alignment_%28TBA%29

Apr 10, 2015 | 1999 Volkswagen Jetta

2 Answers

Why is engine light on ?


The 506, 171, and 1582 codes could be due to carbon buildup in the throttle body. Use throttle body cleaner to remove the carbon build up and retset codes. The 0440 code is the evap system code. This is usually a loose or worn out fuel cap.

Aug 23, 2014 | 1999 Volkswagen Beetle

1 Answer

Check engine on with code p1582


the code p1582 means Idle Adaptation at Limit. Know more about the car diagnostic tool to check the car.

Nov 02, 2012 | Cars & Trucks

1 Answer

Ford Code P1505 for 1994 Ford Thunderbird Lx


Adaptive Idle Air Control Strategy

The Adaptive Idle Air Control (IAC) strategy is designed to adjust the IAC calibration to correct for wear and aging of components. When engine conditions meet the adaptive strategy learning requirement, the strategy monitors the engine and determines the values required for ideal idle calibration. The adaptive strategy stores these values in a table for reference. This table is used by the PCM as a correction factor when controlling idle speed. The adaptive idle table is stored in Keep Alive Memory (KAM) and retains the learned values even after the engine is shut off. A Diagnostic Trouble Code (DTC) is output to indicate that the adaptive IAC strategy has reached its learning limits.

Diagnostic Trouble Code (DTC) P1505 indicates the IAC system has reached the adaptive clip.

Possible causes:

-- Air leaks.

-- Plugged air filter element.

-- Throttle body/linkage binding.

-- Contaminated or damaged IAC valve assembly.

-- Damaged throttle body.

Sep 22, 2012 | Ford Thunderbird Cars & Trucks

1 Answer

OBDII VW Code 17990


i found this on another forum. Hope it helps.
profile_thumbnail.jpg?222960e9c2d5 Master


This is the code info: 17990 P1582 Idle Adaptation at Limit

The idle control system on your car compensates to keep the engine idling properly, when it has to over compensate, it sets a code. Vacuum leaks are a main cause, but it could also be the result of one of the sensors in the engine management system. Perform a visual check of the vacuum lines and intake hoses and look for loose clamps, disconnected hoses etc

Dec 31, 2011 | 1999 Volkswagen Beetle

1 Answer

94 thunderbird code 1505


Diagnostic Trouble Code (DTC) P1505 indicates the IAC system has reached the adaptive clip.
Possible causes:
  • Air leaks.
  • Plugged air filter element.
  • Throttle body/linkage binding.
  • Contaminated or damaged IAC valve assembly.
  • Damaged throttle body
The Adaptive Idle Air Control (IAC) strategy is designed to adjust the IAC calibration to correct for wear and aging of components. When engine conditions meet the adaptive strategy learning requirement, the strategy monitors the engine and determines the values required for ideal idle calibration. The adaptive strategy stores these values in a table for reference. This table is used by the PCM as a correction factor when controlling idle speed. The adaptive idle table is stored in Keep Alive Memory (KAM) and retains the learned values even after the engine is shut off. A Diagnostic Trouble Code (DTC) is output to indicate that the adaptive IAC strategy has reached its learning limits.
Whenever an IAC component is replaced or cleaned or a service affecting idle is performed, it is recommended that KAM be cleared. This is necessary so the idle strategy does not use the previously learned adaptive values.
To clear KAM, refer to PCM Reset in Section 2. It is important to note that erasing DTCs with a scan tool does not reset the adaptive idle table.
Once KAM has been reset, the engine must idle for fifteen minutes (actual time varies between strategies) to learn new adaptive values. Idle quality will improve as the strategy adapts. Adaptation occurs in four separate modes. The modes are transmission select in neutral with air conditioning on; transmission select in neutral with air conditioning off; transmission select in drive with air conditioning on; and transmission select in drive with air conditioning off.

Jul 01, 2009 | 1998 Ford Explorer

1 Answer

Idle adaptation at limit


Your cruise control module circuit is reporting low voltage.
Check your battery, all your fuses, as well as the alternator.
You could try replacing the cruise control fuse, and hope that solves the problem. If not go to an auto parts store that has electrical diagnostic equipment and ask if they could identify the source of the problem (could be the module is going bad).

Jan 16, 2009 | 2000 Volkswagen Jetta TDI

1 Answer

I have 3 codes that showed up in the computer of my 1995 Ford Windstar


Here is the first half of the codes look till you find the one you have
111 System PASS.
112 ACT sensor circuit grounded.
113 ACT sensor circuit open.
114 ACT sensor is out of Self-Test.
116 ECT sensor is out of Self-Test.
117 ECT sensor circuit grounded.
118 ECT sensor circuit open.
121 TP sensor is out of Self-Test.
122 TP sensor input is less than Self-Test minimum.
123 TP sensor input is greater than Self-Test maximum.
124 TP sensor input voltage is greater than expected.
125 TP sensor input voltage is less than expected.
128 MAP vacuum hose damaged or disconnected.
129 Insufficient MAF input.
136 HEGO sensor circuit indicates system lean (Right HEGO).
137 HEGO sensor circuit indicates system rich (Right HEGO).
139 No HEGO switching (Front Side).
141 Fuel system indicates lean.
144 No HEGO switching (Left Side).
157 MAF sensor circuit open.
158 MAF sensor shorted to power.
159 MAF sensor is out of Self-Test.
167 Insufficient TP input change.
171 Lack of HEGO switching (Rear Side).
172 HEGO sensor circuit indicates lean. (Rear Side).
173 HEGO sensor circuit indicates rich. (Rear Side).
174 Check for diluted engine oil.
175 Lack of HEGO switching (Front Side).
176 HEGO sensor circuit indicates lean. (Front Side).
177 HEGO sensor circuit indicates rich. (Front Side).
178 Check for diluted engine oil.
179 Fuel system at part throttle lean adaptive limit, system rich (Rear Side).
181 Fuel system at part throttle rich adaptive limit, system lean (Rear Side).
182 Fuel system at idle lean adaptive limit, system rich (Rear Side).
183 Fuel system at idle rich adaptive limit, system lean (Rear Side).
184 MAF sensor input voltage is greater than expected, in range.
185 MAF sensor input voltage is less than expected, in range.
186 Closed loop injector pulse width longer than expected.
187 Closed loop injector pulse width shorter than expected.
188 Fuel system at part throttle lean adaptive limit, system rich (Front Side).
189 Fuel system at part throttle rich adaptive limit, system lean (Front Side).
193 Flexible Fuel sensor circuit failure.
211 PIP circuit failure.
212 Loss of tachometer/IDM input.
213 EEC SPOUT circuit open.
214 CID circuit failure.
215 PCM detected coil 1 primary circuit failure.
216 PCM detected coil 2 primary circuit failure.
217 PCM detected coil 3 primary circuit failure.
218 Loss of ignition diagnostic monitor signal-left side.
219 Spark timing defaulted to 10 degrees, spark output circuit open.
221 Spark timing error.
222 Loss of ignition diagnostic monitor signal-right side.
223 Loss of dual plug inhibit control.
224 PCM detected coil 1, 2, 3 or 4 primary circuit failure.
225 Knock not sensed during dynamic response test KOER.
226 Ignition diagnostic monitor signal not received.
232 PCM detected coil 1, 2, 3 or 4 primary circuit failure.
238 PCM detected coil 4 primary circuit failure.
241 Ignition control module to PCM ignition diagnostic monitor pulse width transmission error.
244 Cylinder Identification circuit fault present when cylinder balance test requested.
311 Secondary air injection system inoperative during KOER self-test (bank #1).
312 Secondary air injection system misdirected during KOER self-test.
313 Secondary air injection system not bypassed during KOER self-test.
314 Secondary air injection system inoperative during KOER self-test (bank #2)
326 PFE sensor circuit voltage lower than expected.
327 PFE sensor circuit voltage below Self-Test minimum.
328 Exhaust gas recirculation valve position sensor closed voltage lower than expected.
332 Insufficient EGR flow.
334 Exhaust gas recirculation valve position sensor closed voltage higher than expected.
335 PFE sensor circuit voltage out of Self-Test range.
336 PFE sensor circuit voltage higher than expected.
337 PFE sensor circuit voltage above Self-Test maximum.
338 Engine coolant temperature lower than expected (thermostat test).
339 Engine coolant temperature higher than expected (thermostat test).
341 Octane adjust service pin open.
381 Frequent A/C clutch cycling.
411 Cannot control RPM during KOER low RPM check.
412 Cannot control RPM during KOER high RPM check.
415 Idle Air Control system at maximum adaptive lower limit.
416 Idle Air Control system at upper adaptive learning limit.
452 Insufficient input from VSS.
453 Servo leaking down.
454 Servo leaking.
455 Insufficient RPM increase.
456 Insufficient RPM decrease.
457 Speed control command switch(s) circuit not functioning.
458 Speed control command switch(s) stuck/circuit grounded.
459 Speed control ground circuit open.

Jan 15, 2009 | 2001 Ford Windstar

1 Answer

Asc light comes on and engine cuts out


When your ASC light is on this is to let you know your Automatic Stability Control system is switched off press the ASC button Till light is off /ASC is on this works with your rev limiter and should stabilized your idle. If the problem persists have your throttle control unit checked as thi can trigger the ASC light as well and may also activate the ABS light if not fixed

Nov 11, 2008 | 1997 BMW 318

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