P0801
Reverse Inhibit Control Circuit Malfunction
P0803
1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
P0804
1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
P0805
Clutch Position Sensor Circuit Malfunction
P0806
Clutch Position Sensor Circuit Range/Performance Malfunction
P0807
Clutch Position Sensor Circuit Low Malfunction
P0808
Clutch Position Sensor Circuit High Malfunction
P0809
Clutch Position Sensor Circuit Intermittent Malfunction
P0810
Clutch Position Control Error
P0811
Excessive Clutch Slippage
P0812
Reverse Input Circuit
P0813
Reverse Output Circuit
P0814
Transmission Range Display Circuit
P0815
Upshift Switch Circuit
P0816
Downshift Switch Circuit
P0817
Starter Disable Circuit
P0818
Driveline Disconnect Switch Input Circuit
P0820
Gear Lever X – Y Position Sensor Circuit
P0821
Gear Lever X Position Circuit
P0822
Gear Lever Y Position Circuit
P0823
Gear Lever X Position Circuit Intermittent
P0824
Gear Lever Y Position Circuit Intermittent
P0825
Gear Lever Push – Pull Switch (Shift Anticipate)
P0830
Clutch Pedal Switch “A” Circuit
P0831
Clutch Pedal Switch “A” Circuit Low
P0832
Clutch Pedal Switch “A” Circuit High
P0833
Clutch Pedal Switch “B” Circuit
P0834
Clutch Pedal Switch “B” Circuit Low
P0835
Clutch Pedal Switch “B” Circuit High
P0836
Four Wheel Drive (4WD) Switch Circuit
P0837
Four Wheel Drive (4WD) Switch Circuit Range/Performance
P0838
Four Wheel Drive (4WD) Switch Circuit Low
P0839
Four Wheel Drive (4WD) Switch Circuit High
P0840
Transmission Fluid Pressure Sensor/Switch “A” Circuit
P0841
Transmission Fluid Pressure Sensor/Switch “A” Circuit Range/Performance
P0842
Transmission Fluid Pressure Sensor/Switch “A” Circuit Low
P0843
Transmission Fluid Pressure Sensor/Switch “A” Circuit High
P0844
Transmission Fluid Pressure Sensor/Switch “A” Circuit Intermittent
P0845
Transmission Fluid Pressure Sensor/Switch “B” Circuit
P0846
Transmission Fluid Pressure Sensor/Switch “B” Circuit Range/Performance
P0847
Transmission Fluid Pressure Sensor/Switch “B” Circuit Low
P0848
Transmission Fluid Pressure Sensor/Switch “B” Circuit High
P0849
Transmission Fluid Pressure Sensor/Switch “B” Circuit Intermittent
P0700
Transmission Control System Malfunction
P0701
Transmission Control System Range/Performance
P0702
Transmission Control System Electrical
P0703
Torque Converter/Brake Switch B Circuit Malfunction
P0704
Clutch Switch Input Circuit Malfunction
P0705
Transmission Range Sensor Circuit Malfunction (PRNDL Input)
P0706
Transmission Range Sensor Circuit Range/Performance
P0707
Transmission Range Sensor Circuit Low Input
P0708
Transmission Range Sensor Circuit High Input
P0709
Transmission Range Sensor Circuit Intermittent
P0710
Transmission Fluid Temperature Sensor Circuit Malfunction
P0711
Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712
Transmission Fluid Temperature Sensor Circuit Low Input
P0713
Transmission Fluid Temperature Sensor Circuit High Input
P0714
Transmission Fluid Temperature Sensor Circuit Intermittent
P0715
Input/Turbine Speed Sensor Circuit Malfunction
P0716
Input/Turbine Speed Sensor Circuit Range/Performance
P0717
Input/Turbine Speed Sensor Circuit No Signal
P0718
Input/Turbine Speed Sensor Circuit Intermittent
P0719
Torque Converter/Brake Switch B Circuit Low
P0720
Output Speed Sensor Circuit Malfunction
P0721
Output Speed Sensor Circuit Range/Performance
P0722
Output Speed Sensor Circuit No Signal
P0723
Output Speed Sensor Circuit Intermittent
P0724
Torque Converter/Brake Switch B Circuit High
P0725
Engine Speed Input Circuit Malfunction
P0726
Engine Speed Input Circuit Range/Performance
P0727
Engine Speed Input Circuit No Signal
P0728
Engine Speed Input Circuit Intermittent
P0730
Incorrect Gear Ratio
P0731
Gear 1 Incorrect Ratio
P0732
Gear 2 Incorrect Ratio
P0733
Gear 3 Incorrect Ratio
P0734
Gear 4 Incorrect Ratio
P0735
Gear 5 Incorrect Ratio
P0736
Reverse Incorrect Ratio
P0740
Torque Converter Clutch Circuit Malfunction
P0741
Torque Converter Clutch Circuit Performance or Stuck Off
P0742
Torque Converter Clutch Circuit Stuck On
P0743
Torque Converter Clutch Circuit Electrical
P0744
Torque Converter Clutch Circuit Intermittent
P0745
Pressure Control Solenoid Malfunction
P0746
Pressure Control Solenoid Performance or Stuck Off
P0747
Pressure Control Solenoid Stuck On
P0748
Pressure Control Solenoid Electrical
P0749
Pressure Control Solenoid Intermittent
P0750
Shift Solenoid A Malfunction
P0751
Shift Solenoid A Performance or Stuck Off
P0752
Shift Solenoid A Stuck On
P0753
Shift Solenoid A Electrical
P0754
Shift Solenoid A Intermittent
P0755
Shift Solenoid B Malfunction
P0756
Shift Solenoid B Performance or Stuck Off
P0757
Shift Solenoid B Stuck On
P0758
Shift Solenoid B Electrical
P0759
Shift Solenoid B Intermittent
P0760
Shift Solenoid C Malfunction
P0761
Shift Solenoid C Performance or Stuck Off
P0762
Shift Solenoid C Stuck On
P0763
Shift Solenoid C Electrical
P0764
Shift Solenoid C Intermittent
P0765
Shift Solenoid D Malfunction
P0766
Shift Solenoid D Performance or Stuck Off
P0767
Shift Solenoid D Stuck On
P0768
Shift Solenoid D Electrical
P0769
Shift Solenoid D Intermittent
P0770
Shift Solenoid E Malfunction
P0771
Shift Solenoid E Performance or Stuck Off
P0772
Shift Solenoid E Stuck On
P0773
Shift Solenoid E Electrical
P0774
Shift Solenoid E Intermittent
P0775
Pressure Control Solenoid “B”
P0776
Pressure Control Solenoid “B” Performance or Stuck off
P0777
Pressure Control Solenoid “B” Stuck On
P0778
Pressure Control Solenoid “B” Electrical
P0779
Pressure Control Solenoid “B” Intermittent
P0780
Shift Malfunction
P0781
1-2 Shift Malfunction
P0782
2-3 Shift Malfunction
P0783
3-4 Shift Malfunction
P0784
4-5 Shift Malfunction
P0785
Shift/Timing Solenoid Malfunction
P0786
Shift/Timing Solenoid Range/Performance
P0787
Shift/Timing Solenoid low
P0788
Shift/Timing Solenoid High
P0789
Shift/Timing Solenoid Intermittent
P0790
Normal/Performance Switch Circuit Malfunction
P0791
Intermediate Shaft Speed Sensor Circuit
P0792
Intermediate Shaft Speed Sensor Circuit Range/Performance
P0793
Intermediate Shaft Speed Sensor Circuit No signal
P0794
Intermediate Shaft Speed Sensor Circuit Intermittent
P0795
Pressure Control Solenoid “C”
P0796
Pressure Control Solenoid “C” Performance or Stuck off
P0797
Pressure Control Solenoid “C” Stuck On
P0798
Pressure Control Solenoid “C” Electrical
P0799
Pressure Control Solenoid “C” Intermittent
P0600
Serial Communication Link Malfunction
P0601
Internal Control Module Memory Check Sum Error
P0602
Control Module Programming Error
P0603
Internal Control Module Keep Alive Memory (KAM) Error
P0604
Internal Control Module Random Access Memory (RAM) Error
P0605
Internal Control Module Read Only Memory (ROM) Error
(Module Identification Defined by SAE J1979)
P0606
ECM/PCM Processor Fault
P0608
Control Module VSS Output “A” Malfunction
P0609
Control Module VSS Output “B” Malfunction
P0610
Control Module VSS Output “B” Malfunction
P0615
Starter Relay Circuit
P0616
Starter Relay Circuit Low
P0617
Starter Relay Circuit High
P0618
Alternative Fuel Control Module KAM Error
P0619
Alternative Fuel Control Module RAM/ROM Error
P0620
Generator Control Circuit Malfunction
P0621
Generator Lamp “L” Control Circuit Malfunction
P0622
Generator Field “F” Control Circuit Malfunction
P0623
Generator Lamp Control Circuit
P0624
Fuel Cap Lamp Control Circuit
P0630
VIN Not Programmed or Mismatch – ECM/PCM
P0631
VIN Not Programmed or Mismatch – TCM
P0635
Power Steering Control Circuit
P0636
Power Steering Control Circuit Low
P0637
Power Steering Control Circuit High
P0638
Throttle Actuator Control Range/Performance (Bank 1)
P0639
Throttle Actuator Control Range/Performance (Bank 2)
P0640
Intake Air Heater Control Circuit
P0645
A/C Clutch Relay Control Circuit
P0646
A/C Clutch Relay Control Circuit Low
P0647
A/C Clutch Relay Control Circuit High
P0648
Immobilizer Lamp Control Circuit
P0649
Speed Control Lamp Control Circuit
P0650
Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
P0654
Engine RPM Output Circuit Malfunction
P0655
Engine Hot Lamp Output Control Circuit Malfunction
P0656
Fuel Level Output Circuit Malfunction
P0660
Intake Manifold Tuning Valve Control Circuit (Bank 1)
P0661
Intake Manifold Tuning Valve Control Circuit Low (Bank 1)
P0662
Intake Manifold Tuning Valve Control Circuit High (Bank 1)
P0663
Intake Manifold Tuning Valve Control Circuit (Bank 2)
P0664
Intake Manifold Tuning Valve Control Circuit Low (Bank 2)
P0665
Intake Manifold Tuning Valve Control Circuit High (Bank 2)
Throttle/Pedal Position Sensor/Switch “A” Circuit Low Input
Our emissions expert has put together the following information about the P0122 fault code. We have also included diagnostic procedures you can take to your repair shop if the mechanic is having difficulty analyzing the code.
OBD II Fault Code
OBD II P0122
Fault Code Definition
Code P0122 is triggered when the voltage output from the Throttle/Pedal Position Sensor/Switch to the PCM is too low.
The Throttle Position Sensor/Switch is located on the Throttle Body of the Intake Manifold and the Pedal Position Sensor/Switch is located on the Accelerator Pedal. These sensors provide precise input from the driver’s foot in terms of how much power is needed—and how urgently—from the engine.
As the Throttle Position Sensor is rotated from its base resting position to full acceleration, it sends a increasing voltage signal to the Powertrain Control Module (PCM). This decreasing or increasing voltage signal is used by the PCM to manage the Air Fuel Ratio and Spark Timing of the engine as well as other emissions system components.
Symptoms
Check Engine Light will illuminate
In many cases, no abnormal symptoms may be noticed
In some cases, the engine may be hard starting
In some cases, the engine may hesitate during acceleration
Common Problems That Trigger the P0122 Code
Defective Throttle Position Sensor or Switch
Torn or jammed floor mats
Faulty or corroded Throttle/Pedal Position Sensor/Switch wiring or connections
Common Misdiagnoses
Throttle or Pedal Position Sensor is replaced when the real problem is a poor connection or chafed wiring
Pedal Position Sensor is replaced when the real problem is torn or damaged floor mats
Possible Solutions
Some recommended troubleshooting and repair steps are:
Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary
Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary.
If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics.
If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it’s not rubbing on anything, grounding, etc. The code may come back.
Other TPS sensor and circuit related DTCs: P0120, P0121, P0123, P0124
P0801 Reverse Inhibit Control Circuit
P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit
P0804 1-4 Upshift (Skip Shift) Lamp Control Circuit
P0805 Clutch Position Sensor Circuit
P0806 Clutch Position Sensor Circuit Range/Performance
P0807 Clutch Position Sensor Circuit Low
P0808 Clutch Position Sensor Circuit High
P0809 Clutch Position Sensor Circuit Intermittent
P0810 Clutch Position Control Error
P0811 Excessive Clutch Slippage
P0812 Reverse Input Circuit
P0813 Reverse Output Circuit
P0814 Transmission Range Display Circuit
P0815 Upshift Switch Circuit
P0816 Downshift Switch Circuit
P0817 Starter Disable Circuit
P0818 Driveline Disconnect Switch Input Circuit
P0820 Gear Lever X-Y Position Sensor Circuit
P0821 Gear Lever X Position Circuit
P0822 Gear Lever Y Position Circuit
P0823 Gear Lever X Position Circuit Intermittent
P0824 Gear Lever Y Position Circuit Intermittent
P0825 Gear Lever Push-Pull Switch (Shift Anticipate)
P0830 Clutch Pedal Switch “A” Circuit
P0831 Clutch Pedal Switch “A” Circuit Low
P0832 Clutch Pedal Switch “A” Circuit High
P0833 Clutch Pedal Switch “B” Circuit
P0834 Clutch Pedal Switch “B” Circuit Low
P0835 Clutch Pedal Switch “B” Circuit High
P0836 Four Wheel Drive (4WD) Switch Circuit
P0837 Four Wheel Drive (4WD) Switch Circuit Range/Performance
P0838 Four Wheel Drive (4WD) Switch Circuit Low
P0839 Four Wheel Drive (4WD) Switch Circuit High
P0840 Transmission Fluid Pressure Sensor/Switch “A” Circuit
P0841 Transmission Fluid Pressure Sensor/Switch “A” Circuit Range/Performance
P0842 Transmission Fluid Pressure Sensor/Switch “A” Circuit Low
P0843 Transmission Fluid Pressure Sensor/Switch “A” Circuit High
P0844 Transmission Fluid Pressure Sensor/Switch “A” Circuit Intermittent
P0845 Transmission Fluid Pressure Sensor/Switch “B” Circuit
P0846 Transmission Fluid Pressure Sensor/Switch “B” Circuit Range/Performance
P0847 Transmission Fluid Pressure Sensor/Switch “B” Circuit Low
P0848 Transmission Fluid Pressure Sensor/Switch “B” Circuit High
P0849 Transmission Fluid Pressure Sensor/Switch “B” Circuit Intermittent
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