P1300

Random Misfire (Acura)

P1309

Misfire Monitor Disabled (Ford)

P1320

Ignition Control (IC) Module 4x Reference Circuit Intermittent No Pulses

P1323

Ignition Control (IC) Module 24x Reference Circuit low frequency

P1336

Crankshaft Position System Variation Not Learned (GM)

P1336

Crankshaft Speed Fluctuation Sensor Intermittant Interruption (Acura)

P1337

Crankshaft Speed Fluctuation Sensor No Signal (Acura)

P1350

Ignition Control System

P1351

Ignition Coil Control Circuit High Voltage (GM)

P1352

Ignition Bypass Circuit High Voltage (GM)

P1359

Crankshaft Position/TDC/Cylinder Position Sensor Connector Disconnection (Acura)

P1361

Intermittent Interruption In TDC1 Sensor Circuit (Acura)

P1361

Ignition Control (IC) Circuit Low Voltage (GM)

P1362

No Signal In TDC1 Sensor Circuit (Acura)

P1362

Ignition Bypass Circuit Low Voltage (GM)

P1366

Intermittent Interruption In TDC2 Sensor Circuit (Acura)

P1367

No Signal In TDC2 Sensor Circuit (Acura)

P1370

Ignition Control (IC) Module 4x Reference too many pulses

P1371

Ignition Control (IC) Module 4x Reference too few pulses

P1374

CKP High to Low Resolution Frequency Correlation (GM)

P1375

Ignition Control (IC) Module 24x Reference High Voltage

P1376

Ignition Ground Circuit

P1377

Ignition Control (IC) Module Cam Pulse to 4x Reference Pulse Comparison

P1380

EBTCM DTC Detected-Rough Data Unusable

P1380

Variable Cam Timing Solenoid A Circuit Malfunction (Ford)

P1381

Misfire Detected-No EBTCM/PCM Serial Data

P1381

Cylinder Position Sensor Intermittant Inturruption (Acura)

P1381

Variable Cam Timing Over-advanced (Bank 1) (Ford)

P1382

Cylinder Position Sensor No Signal (Acura)

P1383

Variable Cam Timing Over-retarded (Bank 1) (Ford)

P1388

Auto Shutdown Relay Circuit (Chrysler)

P1389

No ASD Relay Output Voltage At PCM (Chrysler)

P1390

Timing Belt Skipped One Tooth or More (Chrysler)

P1390

Octane Adjust Out Of Range (Mazda)

P1391

Intermittent Loss of CMP or CKP (Chrysler)

P1398

Mis-Fire Adapter Numerator at Limit (Chrysler)

P1399

Wait To Start Lamp Circuit (Chrysler)

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

Downstream O2 Sensors Swapped Bank To Bank

Description:

How does a P0041 code trigger the check engine light? This code will trigger the light to come on under the following condition:

The Heated Oxygen Sensor Monitor, a strategy built into the computer, determines if the Heated Oxygen Sensor (HO2S) signal response for a change in fuel trim corresponds to the correct engine bank. If a response from the Oxygen Sensor being tested is not indicated, a trouble code will be set and the MIL (Malfunction Indicator Lamp) will illuminate.

Possible Causes:

Crossed Heated Oxygen Sensor harness connectors
Wiring swapped from one Oxygen Sensor connector to the other
Wiring changed at the computer connection or in the related harness

Diagnostic Help:

This check engine light code is caused by swapped wiring or connectors of the downstream Heated Oxygen Sensors. This would have to be the result of a previous repair, so be sure to check the vehicle history. You may also use the “Get Help” link if you need specifications or have any other related questions. Remember to refer to an appropriate manual for specific instructions.

Downstream O2 Sensors Swapped Bank To Bank

Description:

How does a P0041 code trigger the check engine light? This code will trigger the light to come on under the following condition:

The Heated Oxygen Sensor Monitor, a strategy built into the computer, determines if the Heated Oxygen Sensor (HO2S) signal response for a change in fuel trim corresponds to the correct engine bank. If a response from the Oxygen Sensor being tested is not indicated, a trouble code will be set and the MIL (Malfunction Indicator Lamp) will illuminate.

Possible Causes:

Crossed Heated Oxygen Sensor harness connectors
Wiring swapped from one Oxygen Sensor connector to the other
Wiring changed at the computer connection or in the related harness

Diagnostic Help:

This check engine light code is caused by swapped wiring or connectors of the downstream Heated Oxygen Sensors. This would have to be the result of a previous repair, so be sure to check the vehicle history. You may also use the “Get Help” link if you need specifications or have any other related questions. Remember to refer to an appropriate manual for specific instructions.

Upstream O2 Sensors Swapped Bank To Bank

Description:

How does a P0040 code trigger the check engine light? This code will trigger the light to come on under the following condition:

The Heated Oxygen Sensor Monitor, a strategy built into the computer, determines if the Heated Oxygen Sensor (HO2S) signal response for a change in fuel trim corresponds to the correct engine bank. If a response from the Oxygen Sensor being tested is not indicated, a trouble code will be set and the MIL (Malfunction Indicator Lamp) will illuminate.

Possible Causes:

Crossed Heated Oxygen Sensor harness connectors
Wiring swapped from one Oxygen Sensor connector to the other
Wiring changed at the computer connection or in the related harness

Diagnostic Help:

This check engine light code is caused by swapped wiring or connectors of the upstream Heated Oxygen Sensors. This would have to be the result of a previous repair, so be sure to check the vehicle history. You may also use the “Get Help” link if you need specifications or have any other related questions. Remember to refer to an appropriate manual for specific instructions.

Recent Comments
  • RESET ENGINE OIL LIFE CADILLAC CT6 ON 2014-2017
    How to reset oil life for Cadillac CT6 from years 2016, 2017 To turning off the Oil Life Light on 2016, 2017 Cadillac CT6, conform to the following instructions: Press SEL button on the steering wheel Scroll to Info Pages and press SEL button Hit the Up/Down button until you see the “OIL LIFE REMAINING” […]
  • RESET ENGINE OIL LIFE HYUNDAI VELOSTER ON 2014-2017
    How to reset oil life for Hyundai Veloster from years 2014, 2015, 2016, 2017 To turning off the Oil Life Light on 2014, 2015, 2016, 2017 Hyundai Veloster, conform to the following instructions: Turn the ignition to position On without starting the engine. Press and hold the TRIP button until you enter to “User Setting” […]
  • RESETTING OIL CHANGE WARNING LIGHT FOR DACIA DUSTER 2009-2015
    How to reset oil change warning light for Dacia Duster from years 2009, 2010, 2011, 2012, 2013, 2014, 2015 To turning off the Oil Life Light on 2009, 2010, 2011, 2012, 2013, 2014, 2015 Dacia Duster, conform to the following instructions: Turn the ignition key to position “ON” fully depress accelerator pedal and then depress […]
  • Service light reset dashboard BMW X5 and BMW X6
    How do you reset maintenance light, reset service light indicator BMW X5 and BMW X6, year 2000-2013. For reset maintenance light and that can be made manually by use button on car dashboard. Reset oil service light, engine oil life BMW X5 and BMW X6, year 2000-2013 oil reset instructions: Turn the ignition to the […]
  • Service light reset dashboard BMW with 20 pin connector
    How do you reset maintenance light, reset service light BMW with 20 pin connector. For reset maintenance light and that can be made manually by use button on car dashboard. Reset service light, engine oil life BMW with 20 pin connector, oil reset instructions: How to reset oil maintenance light on BMW with 20 pin […]