Car feels like transmission slipping bad, but only obd code pops up is p2106 TAC system forced limited power. Trying to figure what I need to do.
Jul 1, 2018 at 3:12 PM
Obd code p2106
2005 LINCOLN TOWN CAR
BRUISER76
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Good evening.
In most cases, this is a failed throttle body assembly.
Roy
QE: Electronic Throttle Control (ETC) System
QE: Introduction See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > QE: Electronic Throttle Control (ETC) System - Introduction
QE1 DTCS P2104, P2105, P2106 OR P2110: CHECK FOR THE PRESENCE OF ANY DTCS OTHER THAN THE INFORMATIONAL DTCS
Are any DTCs present other than the following: P2104, P2105, P2106, or P2110?
Yes
- GO to QE2.
No
- GO to QE4.
QE2 CHECK FOR THE PRESENCE OF PROCESSOR PERFORMANCE DTCS
- Check for self-test DTCs.
Are DTCs P0600, P0606, P060A, P060B, P060C, P061B, P061C, P061D, P061F, P1674, or U0300 present?
Yes
- For DTCs P061B and P2106, GO to QE9.
- For all others, DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- GO to QE3.
QE3 CHECK FOR THE PRESENCE OF ANY ETB CONCERNS
- Check for self-test DTCs.
Are DTCs P2072 or P2100 present?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- DIAGNOSE the remaining DTCs in the following order: KOEO, KOER, and continuous.
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
QE4 CHECK FOR DTCS IN OTHER VEHICLE MODULES
- Check for self-test DTCs in all of the vehicle modules.
Are any DTCs present?
Yes
- REFER to the applicable Section to diagnose the DTC.
No
- GO to QE5.
QE5 CHECK FOR THE PRESENCE OF ANY MODULE COMMUNICATION CONCERNS
- Check for self-test DTCs in all of the vehicle modules.
Are any communication concerns or communication DTCs present?
Yes
- For communication concerns in the PCM, DISREGARD the current diagnostic
trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section
4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
- For communication concerns in other modules, REFER to the applicable Section to diagnose the communication DTC.
No
- For DTC P2104, GO to QE6.
- For DTC P2105, GO to QE7.
- For DTC P2106, GO to QE9.
- For DTC P2110, GO to QE11.
QE6 DTC P2104: CHECK FOR THE PRESENCE OF PCM DTCS
Note:P2104 sets in combination with other DTCs.
- Clear the PCM DTCs.
- Check for self-test DTCs.
Are any DTCs present other than the following: P2104?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- INSTALL a new PCM. REFER to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM) See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Flash Electrically Erasable Programmable Read Only Memory (EEPROM).
QE7 DTC P2105: CHECK FOR THE PRESENCE OF PCM DTCS
Note:P2105 may be set in combination with other DTCs. Diagnose other DTCs first.
- Clear the PCM DTCs.
- Check for self-test DTCs.
Are any DTCs present other than the following: P2105?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- GO to QE8.
QE8 CARRY OUT A VISUAL INSPECTION
- Key in OFF position.
- Visually inspect the following for obvious signs of damage:
- ETB
- PCM
- Check the harness for routing, alterations, incorrect shielding, or electrical interference from other systems. Make sure aftermarket wiring is not routed near the PCM.
- Verify aftermarket equipment does not generate radio frequency interference/electromagnetic interference (RFI/EMI).
Is a concern present?
Yes
- ISOLATE the concern and REPAIR as necessary.
No
- INSTALL a new PCM. REFER to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM) See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Flash Electrically Erasable Programmable Read Only Memory (EEPROM).
QE9 DTCS P061B OR P2106: CHECK FOR THE PRESENCE OF PCM DTCS
Note:An intermittent CKP sensor or harness concern may cause DTC P061B to set. Check for intermittent CKP sensor and harness concerns.
- Clear the PCM DTCs.
- Check for self-test DTCs.
Are any DTCs present other than the following: P061B or P2106?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- For Crown Victoria,
- Grand Marquis,
- Explorer,
- Mountaineer,
- E-Series 4.6L,
- F-150 4.2L,
- F-150 4.6L,
- Freestyle,
- Five Hundred,
- Montego,
- LS 3.9L,
- Thunderbird,
- Mustang 4.0L, and
- Town Car, GO to QE10.
- For Expedition,
- F-150 5.4L,
- LS 3.0L, and
- Mustang 4.6L Automatic, GO to QE12.
- For all others, CHECK for an intermittent concern with an ETC related harness or sensor.
- GO to Pinpoint Test Z See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Z: Intermittent - Introduction.
QE10 CHECK THE MAP SENSOR FOR AN OFFSET SIGNAL
- Key in OFF position.
- Allow the vehicle to cool down.
- ESM connector disconnected.
- Measure the resistance between:
image
Is the resistance greater than 2K ohms?
Yes
- For Crown Victoria,
- Grand Marquis,
- Explorer,
- Mountaineer,
- F-150 4.6L,
- LS 3.9L,
- Thunderbird, and
- Town Car, GO to QE12.
- For all others, CHECK for an intermittent concern with an ETC related harness or sensor.
- GO to Pinpoint Test Z See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Z: Intermittent - Introduction.
No
- INSTALL a new ESM.
QE11 DTC P2110: CHECK FOR THE PRESENCE OF PCM DTCS
Note:P2110 sets in combination with other DTCs.
- Clear the PCM DTCs.
- Check for self-test DTCs.
Are any DTCs present other than the following: P2110?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- INSTALL a new PCM. REFER to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM) See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Flash Electrically Erasable Programmable Read Only Memory (EEPROM).
QE12 CHECK FOR ABS AND WHEEL SPEED SENSOR CONCERNS
Note:Refer to Section 6 See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > SECTION 6: Reference Values Reference Values for the typical diagnostic reference values.
- ESM connector connected.
- Key ON, engine running.
- Access the PCM and monitor the OSS, TSS/ISS and VSS PIDs.
- Access the ABS Control Module and monitor the LF_WSPD, LR_WSPD, RF_WSPD and RR_WSPD PIDs.
- Road test the vehicle under various load conditions while comparing the PIDs. Check for signals that are intermittent or do not correspond.
Do the PID values correspond with the vehicle operating conditions?
Yes
- CHECK for an intermittent concern with an ETC related harness or sensor.
- GO to Pinpoint Test Z See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Z: Intermittent - Introduction.
No
- REFER to Antilock Brakes / Traction Control Systems to diagnose any ABS concerns.
In most cases, this is a failed throttle body assembly.
Roy
QE: Electronic Throttle Control (ETC) System
QE: Introduction See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > QE: Electronic Throttle Control (ETC) System - Introduction
QE1 DTCS P2104, P2105, P2106 OR P2110: CHECK FOR THE PRESENCE OF ANY DTCS OTHER THAN THE INFORMATIONAL DTCS
Are any DTCs present other than the following: P2104, P2105, P2106, or P2110?
Yes
- GO to QE2.
No
- GO to QE4.
QE2 CHECK FOR THE PRESENCE OF PROCESSOR PERFORMANCE DTCS
- Check for self-test DTCs.
Are DTCs P0600, P0606, P060A, P060B, P060C, P061B, P061C, P061D, P061F, P1674, or U0300 present?
Yes
- For DTCs P061B and P2106, GO to QE9.
- For all others, DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- GO to QE3.
QE3 CHECK FOR THE PRESENCE OF ANY ETB CONCERNS
- Check for self-test DTCs.
Are DTCs P2072 or P2100 present?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- DIAGNOSE the remaining DTCs in the following order: KOEO, KOER, and continuous.
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
QE4 CHECK FOR DTCS IN OTHER VEHICLE MODULES
- Check for self-test DTCs in all of the vehicle modules.
Are any DTCs present?
Yes
- REFER to the applicable Section to diagnose the DTC.
No
- GO to QE5.
QE5 CHECK FOR THE PRESENCE OF ANY MODULE COMMUNICATION CONCERNS
- Check for self-test DTCs in all of the vehicle modules.
Are any communication concerns or communication DTCs present?
Yes
- For communication concerns in the PCM, DISREGARD the current diagnostic
trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section
4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
- For communication concerns in other modules, REFER to the applicable Section to diagnose the communication DTC.
No
- For DTC P2104, GO to QE6.
- For DTC P2105, GO to QE7.
- For DTC P2106, GO to QE9.
- For DTC P2110, GO to QE11.
QE6 DTC P2104: CHECK FOR THE PRESENCE OF PCM DTCS
Note:P2104 sets in combination with other DTCs.
- Clear the PCM DTCs.
- Check for self-test DTCs.
Are any DTCs present other than the following: P2104?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- INSTALL a new PCM. REFER to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM) See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Flash Electrically Erasable Programmable Read Only Memory (EEPROM).
QE7 DTC P2105: CHECK FOR THE PRESENCE OF PCM DTCS
Note:P2105 may be set in combination with other DTCs. Diagnose other DTCs first.
- Clear the PCM DTCs.
- Check for self-test DTCs.
Are any DTCs present other than the following: P2105?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- GO to QE8.
QE8 CARRY OUT A VISUAL INSPECTION
- Key in OFF position.
- Visually inspect the following for obvious signs of damage:
- ETB
- PCM
- Check the harness for routing, alterations, incorrect shielding, or electrical interference from other systems. Make sure aftermarket wiring is not routed near the PCM.
- Verify aftermarket equipment does not generate radio frequency interference/electromagnetic interference (RFI/EMI).
Is a concern present?
Yes
- ISOLATE the concern and REPAIR as necessary.
No
- INSTALL a new PCM. REFER to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM) See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Flash Electrically Erasable Programmable Read Only Memory (EEPROM).
QE9 DTCS P061B OR P2106: CHECK FOR THE PRESENCE OF PCM DTCS
Note:An intermittent CKP sensor or harness concern may cause DTC P061B to set. Check for intermittent CKP sensor and harness concerns.
- Clear the PCM DTCs.
- Check for self-test DTCs.
Are any DTCs present other than the following: P061B or P2106?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- For Crown Victoria,
- Grand Marquis,
- Explorer,
- Mountaineer,
- E-Series 4.6L,
- F-150 4.2L,
- F-150 4.6L,
- Freestyle,
- Five Hundred,
- Montego,
- LS 3.9L,
- Thunderbird,
- Mustang 4.0L, and
- Town Car, GO to QE10.
- For Expedition,
- F-150 5.4L,
- LS 3.0L, and
- Mustang 4.6L Automatic, GO to QE12.
- For all others, CHECK for an intermittent concern with an ETC related harness or sensor.
- GO to Pinpoint Test Z See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Z: Intermittent - Introduction.
QE10 CHECK THE MAP SENSOR FOR AN OFFSET SIGNAL
- Key in OFF position.
- Allow the vehicle to cool down.
- ESM connector disconnected.
- Measure the resistance between:
image
Is the resistance greater than 2K ohms?
Yes
- For Crown Victoria,
- Grand Marquis,
- Explorer,
- Mountaineer,
- F-150 4.6L,
- LS 3.9L,
- Thunderbird, and
- Town Car, GO to QE12.
- For all others, CHECK for an intermittent concern with an ETC related harness or sensor.
- GO to Pinpoint Test Z See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Z: Intermittent - Introduction.
No
- INSTALL a new ESM.
QE11 DTC P2110: CHECK FOR THE PRESENCE OF PCM DTCS
Note:P2110 sets in combination with other DTCs.
- Clear the PCM DTCs.
- Check for self-test DTCs.
Are any DTCs present other than the following: P2110?
Yes
- DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions.
No
- INSTALL a new PCM. REFER to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM) See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Flash Electrically Erasable Programmable Read Only Memory (EEPROM).
QE12 CHECK FOR ABS AND WHEEL SPEED SENSOR CONCERNS
Note:Refer to Section 6 See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > SECTION 6: Reference Values Reference Values for the typical diagnostic reference values.
- ESM connector connected.
- Key ON, engine running.
- Access the PCM and monitor the OSS, TSS/ISS and VSS PIDs.
- Access the ABS Control Module and monitor the LF_WSPD, LR_WSPD, RF_WSPD and RR_WSPD PIDs.
- Road test the vehicle under various load conditions while comparing the PIDs. Check for signals that are intermittent or do not correspond.
Do the PID values correspond with the vehicle operating conditions?
Yes
- CHECK for an intermittent concern with an ETC related harness or sensor.
- GO to Pinpoint Test Z See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Z: Intermittent - Introduction.
No
- REFER to Antilock Brakes / Traction Control Systems to diagnose any ABS concerns.
Image (Click to enlarge)
Jul 1, 2018 at 4:26 PM