rivierakid55 Posted January 18, 2007 Report Share Posted January 18, 2007 anyone know what a p2104 is and what might have caused me to get it? Quote Link to comment Share on other sites More sharing options...
PladdPezzPunk Posted January 18, 2007 Report Share Posted January 18, 2007 check that code again. P2104 is not a code that could come up on your car. it's not even listed in the trouble code descriptions sheet for your truck. Maybe it was P2A04? Quote Link to comment Share on other sites More sharing options...
rivierakid55 Posted January 18, 2007 Author Report Share Posted January 18, 2007 check that code again. P2104 is not a code that could come up on your car. it's not even listed in the trouble code descriptions sheet for your truck. Maybe it was P2A04? according to my aeroforce it was actually a 2104 with translated to a p2104 using there reference Quote Link to comment Share on other sites More sharing options...
04CHASE Posted January 18, 2007 Report Share Posted January 18, 2007 P2104 Throttle Actuator Ctrl Sys-Forced Idle Quote Link to comment Share on other sites More sharing options...
PladdPezzPunk Posted January 18, 2007 Report Share Posted January 18, 2007 P2104 Throttle Actuator Ctrl Sys-Forced Idle that would be a "U" code Quote Link to comment Share on other sites More sharing options...
PladdPezzPunk Posted January 18, 2007 Report Share Posted January 18, 2007 maybe this will help DTC P2A04 CIRCUIT DESCRIPTION Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The powertrain control module (PCM) supplies the HO2S with a reference, or bias, voltage of about 450 mV . When the engine is first started the PCM operates in open loop, ignoring the HO2S voltage signal. Once the HO2S reaches operating temperature and closed loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream; low HO2S voltage indicates a lean exhaust stream. The HO2S bank 1 sensor 2 and HO2S bank 2 sensor 2 are used for catalyst monitoring. This diagnostic runs once per ignition cycle. This diagnostic consists of two tests, a passive test and an intrusive test. During the passive test, if the HO2S bank 1 sensor 2 or HO2S bank 2 sensor 2 voltage transitions less than 349 mV and greater than 710 mV , the DTC will pass for this ignition cycle. If the DTC does not pass during the passive test, the intrusive test will begin. During the intrusive test, the control module will force the air-to-fuel ratio rich and/or lean. The control module then waits for a predicted response from the HO2S. If the HO2S voltage transitions less than 349 mV or greater than 710 mV , the DTC will pass for this ignition cycle. If the control module does not receive the expected response from the HO2S, DTC P2A01 will set for HO2S bank 1 sensor 2, or DTC P2A04 will set for HO2S bank 2 sensor 2. DTC DESCRIPTORS This diagnostic procedure supports the following DTCs: DTC P2A01 HO2S Performance Bank 1 Sensor 2 DTC P2A04 HO2S Performance Bank 2 Sensor 2 CONDITIONS FOR RUNNING THE DTC DTCs P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0128, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0151, P0152, P0153, P0154, P0155, P0157, P0158, P0160, P0161, P0200, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1134, P1153, P1154 are not set. Passive Test The engine is running. The above conditions are met for 2 seconds . This diagnostic runs one time per drive cycle when the above conditions are met. Intrusive Test The engine run time is more than 218 seconds . The Ignition 1 Signal parameter is between 10-18 volts . The Engine Speed parameter is between 900-5,000 RPM . The MAF Sensor parameter is between 5-100 g/s . The Vehicle Speed parameter is between 24-131 km/h (15-82 mph) . The Short Term FT Bank 1 and Bank 2 parameter is between -4 and +4 percent . The maximum number of intrusive attempts is less than 100. The above conditions are met for 3 seconds . This diagnostic runs one time per drive cycle when the above conditions are met. CONDITIONS FOR SETTING THE DTC The PCM detects that the HO2S bank 1 sensor 2 or HO2S bank 2 sensor 2 did not transition less than 349 mV and greater than 710 mV during the passive test. One of the following tests fail: Lean Intrusive Test The PCM detects that the HO2S bank 1 sensor 2 or HO2S bank 2 sensor 2 is greater than 349 mV for 60 seconds . The HO2S bank 1 sensor 1 and HO2S bank 2 sensor 1 is less than 300 mV . Rich Intrusive Test The PCM detects that the HO2S bank 1 sensor 2 or HO2S bank 2 sensor 2 is less than 710 mV for 60 seconds . The HO2S bank 1 sensor 1 and HO2S bank 2 sensor 1 is greater than 600 mV . ACTION TAKEN WHEN THE DTC SETS The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails. The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records. CONDITIONS FOR CLEARING THE MIL/DTC The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. A current DTC, Last Test Failed, clears when the diagnostic runs and passes. A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic. Clear the MIL and the DTC with a scan tool. TEST DESCRIPTION Step 1 - Step 10 Step 11 - Step 19 Step 20 - Step 21 The numbers below refer to the step numbers on the diagnostic table. If the voltage does not change more than the specified value, the condition is present. Quote Link to comment Share on other sites More sharing options...
perk03z06 Posted January 19, 2007 Report Share Posted January 19, 2007 P2104 Throttle Actuator Ctrl Sys-Forced Idle that would be a "U" code I have P2104 in my reference ... "Throttle Actuator Control System - Forced Idle" I bet that the throttle plate is not properly setting for an idle condition @ startup, and the PCM is forcing the condition, or perhaps the diagnostic sweep of the throttle plate motor is not completing or failing ... Take your air tube off & have someone turn the ign. key on while you watch the throttle plate. What does the plate do? Does it sweep 100% & then prop for idle? Don't blink ... it happens very quickly ... and by all means ... DO NOT STICK YOUR FINGERS ANYWHERE NEAR THE PLATE WHEN THEY TURN THE KEY ON! EVEN IF THE PLATE STICKS, OR GETS STUCK ... JUST HAVE THEM TURN THE KEY OFF! You'll be missing a good chunk of meat off of your fingers if you do ... Quote Link to comment Share on other sites More sharing options...
perk03z06 Posted January 19, 2007 Report Share Posted January 19, 2007 maybe this will help DTC P2A04 CIRCUIT DESCRIPTION Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The powertrain control module (PCM) supplies the HO2S with a reference, or bias, voltage of about 450 mV . When the engine is first started the PCM operates in open loop, ignoring the HO2S voltage signal. Once the HO2S reaches operating temperature and closed loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream; low HO2S voltage indicates a lean exhaust stream. The HO2S bank 1 sensor 2 and HO2S bank 2 sensor 2 are used for catalyst monitoring. This diagnostic runs once per ignition cycle. This diagnostic consists of two tests, a passive test and an intrusive test. During the passive test, if the HO2S bank 1 sensor 2 or HO2S bank 2 sensor 2 voltage transitions less than 349 mV and greater than 710 mV , the DTC will pass for this ignition cycle. If the DTC does not pass during the passive test, the intrusive test will begin. During the intrusive test, the control module will force the air-to-fuel ratio rich and/or lean. The control module then waits for a predicted response from the HO2S. If the HO2S voltage transitions less than 349 mV or greater than 710 mV , the DTC will pass for this ignition cycle. If the control module does not receive the expected response from the HO2S, DTC P2A01 will set for HO2S bank 1 sensor 2, or DTC P2A04 will set for HO2S bank 2 sensor 2. DTC DESCRIPTORS This diagnostic procedure supports the following DTCs: DTC P2A01 HO2S Performance Bank 1 Sensor 2 DTC P2A04 HO2S Performance Bank 2 Sensor 2 CONDITIONS FOR RUNNING THE DTC DTCs P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0128, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0151, P0152, P0153, P0154, P0155, P0157, P0158, P0160, P0161, P0200, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1134, P1153, P1154 are not set. Passive Test The engine is running. The above conditions are met for 2 seconds . This diagnostic runs one time per drive cycle when the above conditions are met. Intrusive Test The engine run time is more than 218 seconds . The Ignition 1 Signal parameter is between 10-18 volts . The Engine Speed parameter is between 900-5,000 RPM . The MAF Sensor parameter is between 5-100 g/s . The Vehicle Speed parameter is between 24-131 km/h (15-82 mph) . The Short Term FT Bank 1 and Bank 2 parameter is between -4 and +4 percent . The maximum number of intrusive attempts is less than 100. The above conditions are met for 3 seconds . This diagnostic runs one time per drive cycle when the above conditions are met. CONDITIONS FOR SETTING THE DTC The PCM detects that the HO2S bank 1 sensor 2 or HO2S bank 2 sensor 2 did not transition less than 349 mV and greater than 710 mV during the passive test. One of the following tests fail: Lean Intrusive Test The PCM detects that the HO2S bank 1 sensor 2 or HO2S bank 2 sensor 2 is greater than 349 mV for 60 seconds . The HO2S bank 1 sensor 1 and HO2S bank 2 sensor 1 is less than 300 mV . Rich Intrusive Test The PCM detects that the HO2S bank 1 sensor 2 or HO2S bank 2 sensor 2 is less than 710 mV for 60 seconds . The HO2S bank 1 sensor 1 and HO2S bank 2 sensor 1 is greater than 600 mV . ACTION TAKEN WHEN THE DTC SETS The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails. The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records. CONDITIONS FOR CLEARING THE MIL/DTC The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. A current DTC, Last Test Failed, clears when the diagnostic runs and passes. A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic. Clear the MIL and the DTC with a scan tool. TEST DESCRIPTION Step 1 - Step 10 Step 11 - Step 19 Step 20 - Step 21 The numbers below refer to the step numbers on the diagnostic table. If the voltage does not change more than the specified value, the condition is present. No offense ... but I think this is off topic ... 2A04 is not the code he found ... Quote Link to comment Share on other sites More sharing options...
rivierakid55 Posted January 19, 2007 Author Report Share Posted January 19, 2007 P2104 Throttle Actuator Ctrl Sys-Forced Idle that would be a "U" code I have P2104 in my reference ... "Throttle Actuator Control System - Forced Idle" I bet that the throttle plate is not properly setting for an idle condition @ startup, and the PCM is forcing the condition, or perhaps the diagnostic sweep of the throttle plate motor is not completing or failing ... Take your air tube off & have someone turn the ign. key on while you watch the throttle plate. What does the plate do? Does it sweep 100% & then prop for idle? Don't blink ... it happens very quickly ... and by all means ... DO NOT STICK YOUR FINGERS ANYWHERE NEAR THE PLATE WHEN THEY TURN THE KEY ON! EVEN IF THE PLATE STICKS, OR GETS STUCK ... JUST HAVE THEM TURN THE KEY OFF! You'll be missing a good chunk of meat off of your fingers if you do ... thanks, i actually saw the code listed on a mustang forum but didnt know if it would apply to mine as well. code's been gone for a week now. never triggered an actual ses light so we'll see what comes up in the future. Quote Link to comment Share on other sites More sharing options...
jester08 Posted June 21, 2007 Report Share Posted June 21, 2007 Good to hear that the code was gone.. It just seem that nobody answered your question about the cause of the code P2104 - Throttle Actuator Control System - Forced Idle... Anyway, the first time I encountered the same code, I thought it was my Plymouth oxygen sensor and the throttle control system at the same time because I suspect it is already worn out and needs to be replaced... To make the story short, I brought it to my mechanic and he told me that it wasn't the O2 sensor... The code means that only the Throttle actuator control system is in FMEM mode of forced idle. He discovered that the PCM was damaged, I got it replaced and the code was gone... He also told me that multiple ETC system faults or bad APP sensor could also be a cause of P2104... Anyway, hope this helps in case the code show up again... Good luck!!! Quote Link to comment Share on other sites More sharing options...
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