P1500

Vehicle Speed Sensor (VSS) (Mazda)

P1500

Vehicle Speed Sensor (VSS) Intermittant (Ford)

P1501

Vehicle Speed Sensor (VSS) Out Of Range (Ford)

P1502

Vehicle Speed Sensor (VSS) Intermittant (Ford)

P1505

Idle Air Control At Adaptive Clip (Mazda)

P1506

Idle Air Control System Overspeed Error (Mazda)

P1506

Idle Air Control System Overspeed Error (Ford)

P1507

Idle Air Control System Underspeed Error (Mazda)

P1507

Idle Air Control System Underspeed Error (Ford)

P1508

Idle Air Control (IAC) System – Low RPM

P1508

Idle Air Control Valve Circuit Failure (Acura)

P1516

Inlet Manifold Runner Control Input Error (Bank 1) (Ford)

P1517

Inlet Manifold Runner Control Input Error (Bank 2) (Ford)

P1518

Inlet Manifold Runner Control Stuck Open (Ford)

P1519

Malfunction In IAC Valve Circuit (Acura)

P1519

Inlet Manifold Runner Control Stuck Closed (Ford)

P1520

Intake Manifold Runner Control (IMRC) circuit malfunction

P1524

Throttle Position (TP) Sensor Learned Closed Throttle Angle Degrees Out-Of-Range

P1527

Trans Range / Pressure Switch Comparison

P1546

Air Conditioning (A/C) Clutch Relay Control Circuit (GM)

P1549

Intake Manifold Control Circuit Malfunction (Ford)

P1550

PSP Sensor Malfunction (Ford)

P1554

Cruise Engaged Circuit High Voltage

P1560

Cruise Control System-Transaxle Not in Drive

P1564

Cruise Control System-Vehicle Acceleration too high

P1566

Cruise Control System-Engine RPM Too High

P1567

Cruise Control- ABCS Active

P1570

Cruise Control System – Traction Control Active

P1571

Traction Control System PWM Circuit No Frequency

P1572

Brake Pedal Switch Circuit (Ford)

P1574

EBTCM System- Stop Lamp Switch Circuit High Voltage

P1575

Extended Travel Brake Switch Circuit High Voltage

P1579

Park/Neutral to Drive/Reverse At high Throttle Angle

P1585

Cruise Control Inhibit Output Circuit (GM)

P1594

Charging System Voltage Too High (Chrysler)

P1595

Speed Control Solenoid Circuits (Chrysler)

P1596

Speed Control Switch always High (Chrysler)

P1597

Speed Control Switch always Low (Chrysler)

P1598

A/C Pressure Sensor Volts Too High (Chrysler)

P1599

A/C Pressure Sensor Volts Too Low (Chrysler)

P1599

Engine Stall or Near Stall Detected

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

P0200

Injector Circuit Malfunction

P0201

Injector Circuit Malfunction – Cylinder 1

P0202

Injector Circuit Malfunction – Cylinder 2

P0203

Injector Circuit Malfunction – Cylinder 3

P0204

Injector Circuit Malfunction – Cylinder 4

P0205

Injector Circuit Malfunction – Cylinder 5

P0206

Injector Circuit Malfunction – Cylinder 6

P0207

Injector Circuit Malfunction – Cylinder 7

P0208

Injector Circuit Malfunction – Cylinder 8

P0209

Injector Circuit Malfunction – Cylinder 9

P0210

Injector Circuit Malfunction – Cylinder 10

P0211

Injector Circuit Malfunction – Cylinder 11

P0212

Injector Circuit Malfunction – Cylinder 12

P0213

Cold Start Injector 1 Malfunction

P0214

Cold Start Injector 2 Malfunction

P0215

Engine Shutoff Solenoid Malfunction

P0216

Injection Timing Control Circuit Malfunction

P0217

Engine Overtemp Condition

P0218

Transmission Over Temperature Condition

P0219

Engine Over Speed Condition

P0220

Throttle/Pedal Position Sensor/Switch B Circuit Malfunction

P0221

Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance Problem

P0222

Throttle/Pedal Position Sensor/Switch B Circuit Low Input

P0223

Throttle/Pedal Position Sensor/Switch B Circuit High Input

P0224

Throttle/Pedal Position Sensor/Switch B Circuit Intermittent

P0225

Throttle/Pedal Position Sensor/Switch C Circuit Malfunction

P0226

Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem

P0227

Throttle/Pedal Position Sensor/Switch C Circuit Low Input

P0228

Throttle/Pedal Position Sensor/Switch C Circuit High Input

P0229

Throttle/Pedal Position Sensor/Switch C Circuit Intermittent

P0230

Fuel Pump Primary Circuit Malfunction

P0231

Fuel Pump Secondary Circuit Low

P0232

Fuel Pump Secondary Circuit High

P0233

Fuel Pump Secondary Circuit Intermittent

P0234

Turbocharger Overboost Condition

P0235

Turbocharger Boost Sensor A Circuit Malfunction

P0236

Turbocharger Boost Sensor A Circuit Range/Performance

P0237

Turbocharger Boost Sensor A Circuit Low

P0238

Turbocharger Boost Sensor A Circuit High

P0239

Turbocharger Boost Sensor B Circuit Malfunction

P0240

Turbocharger Boost Sensor B Circuit Range/Performance

P0241

Turbocharger Boost Sensor B Circuit Low

P0242

Turbocharger Boost Sensor B Circuit High

P0243

Turbocharger Wastegate Solenoid A Malfunction

P0244

Turbocharger Wastegate Solenoid A Range/Performance

P0245

Turbocharger Wastegate Solenoid A low

P0246

Turbocharger Wastegate Solenoid A High

P0247

Turbocharger Wastegate Solenoid B Malfunction

P0248

Turbocharger Wastegate Solenoid B Range/Performance

P0249

Turbocharger Wastegate Solenoid B Low

P0250

Turbocharger Wastegate Solenoid B High

P0251

Injection Pump Fuel Metering Control “A” Malfunction (Cam/Rotor/Injector)

P0252

Injection Pump Fuel Metering Control “A” Range/Performance (Cam/Rotor/Injector)

P0253

Injection Pump Fuel Metering Control “A” Low (Cam/Rotor/Injector)

P0254

Injection Pump Fuel Metering Control “A” High (Cam/Rotor/Injector)

P0255

Injection Pump Fuel Metering Control “A” Intermittent (Cam/Rotor/Injector)

P0256

Injection Pump Fuel Metering Control “B” Malfunction (Cam/Rotor/Injector)

P0257

Injection Pump Fuel Metering Control “B” Range/Performance (Cam/Rotor/Injector)

P0258

Injection Pump Fuel Metering Control “B” Low (Cam/Rotor/Injector)

P0259

Injection lump Fuel Metering Control “B” High (Cam/Rotor/Injector)

P0260

Injection Pump Fuel Metering Control “B” Intermittent (Cam/Rotor/Injector)

P0261

Cylinder 1 Injector Circuit Low

P0262

Cylinder 1 Injector Circuit High

P0263

Cylinder 1 Contribution/Balance Fault

P0264

Cylinder 2 Injector Circuit Low

P0265

Cylinder 2 Injector Circuit High

P0266

Cylinder 2 Contribution/Balance Fault

P0267

Cylinder 3 Injector Circuit Low

P0268

Cylinder 3 Injector Circuit High

P0269

Cylinder 3 Contribution/Balance Fault

P0270

Cylinder 4 Injector Circuit Low

P0271

Cylinder 4 Injector Circuit High

P0272

Cylinder 4 Contribution/Balance Fault

P0273

Cylinder 5 Injector Circuit Low

P0274

Cylinder 5 Injector Circuit High

P0275

Cylinder 5 Contribution/Balance Fault

P0276

Cylinder 6 Injector Circuit Low

P0277

Cylinder 6 Injector Circuit High

P0278

Cylinder 6 Contribution/Balance Fault

P0279

Cylinder 7 Injector Circuit Low

P0280

Cylinder 7 Injector Circuit High

P0281

Cylinder 7 Contribution/Balance Fault

P0282

Cylinder 8 Injector Circuit Low

P0283

Cylinder 8 Injector Circuit High

P0284

Cylinder 8 Contribution/Balance Fault

P0285

Cylinder 9 Injector Circuit Low

P0286

Cylinder 9 Injector Circuit High

P0287

Cylinder 9 Contribution/Balance Fault

P0288

Cylinder 10 Injector Circuit Low

P0289

Cylinder 10 Injector Circuit High

P0290

Cylinder 10 Contribution/balance Fault

P0291

Cylinder 11 Injector Circuit Low

P0292

Cylinder 11 Injector Circuit High

P0293

Cylinder 11 Contribution/balance Fault

P0294

Cylinder 12 Injector Circuit Low

P0295

Cylinder 12 Injector Circuit High

P0296

Cylinder 12 Contribution/Balance Fault

P0298

Engine Oil Over Temperature

P0100

Mass or Volume Air flow Circuit Malfunction

P0101

Mass or Volume Air flow Circuit Range/Performance Problem

P0102

Mass or Volume Air Flow Circuit low Input

P0103

Mass or Volume Air flow Circuit High Input

P0104

Mass or Volume Air flow Circuit Intermittent

P0105

Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction

P0106

Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem

P0107

Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

P0108

Manifold Absolute Pressure/Barometric Pressure Circuit High Input

P0109

Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent

P0110

Intake Air Temperature Circuit Malfunction

P0111

Intake Air Temperature Circuit Range/Performance Problem

P0112

Intake Air Temperature Circuit Low Input

P0113

Intake Air Temperature Circuit High Input

P0114

Intake Air Temperature Circuit Intermittent

P0115

Engine Coolant Temperature Circuit Malfunction

P0116

Engine Coolant Temperature Circuit Range/Performance Problem

P0117

Engine Coolant Temperature Circuit Low Input

P0118

Engine Coolant Temperature Circuit High Input

P0119

Engine Coolant Temperature Circuit Intermittent

P0120

Throttle Pedal Position Sensor/Switch A Circuit Malfunction

P0121

Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem

P0122

Throttle/Pedal Position Sensor/Switch A Circuit Low Input

P0123

Throttle/Pedal Position Sensor/Switch A Circuit High Input

P0124

Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

P0125

Insufficient Coolant Temperature for Closed Loop Fuel Control

P0126

Insufficient Coolant Temperature for Stable Operation

P0130

Ox Sensor Circuit Malfunction (Bank 1 Sensor 1)

P0131

Ox Sensor Circuit Low Voltage (Bank 1 Sensor 1)

P0132

Ox Sensor Circuit High Voltage (Bank 1 Sensor 1)

P0133

Ox Sensor Circuit Slow Response (Bank 1 Sensor 1)

P0134

Ox Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

P0135

Ox Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P0136

Ox Sensor Circuit Malfunction (Bank 1 Sensor 2)

P0137

Ox Sensor Circuit Low Voltage (Bank 1 Sensor 2)

P0138

Ox Sensor Circuit High Voltage (Bank 1 Sensor 2)

P0139

Ox Sensor Circuit Slow Response (Bank 1 Sensor 2)

P0140

Ox Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

P0141

Ox Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

P0142

Ox Sensor Circuit Malfunction (Bank 1 Sensor 3)

P0143

Ox Sensor Circuit Low Voltage (Bank 1 Sensor 3)

P0144

Ox Sensor Circuit High Voltage (Bank 1 Sensor 3)

P0145

Ox Sensor Circuit Slow Response (Bank 1 Sensor 3)

P0146

Ox Sensor Circuit No Activity Detected (Bank 1 Sensor 3)

P0147

Ox Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)

P0150

Ox Sensor Circuit Malfunction (Bank 2 Sensor 1)

P0151

Ox Sensor Circuit Low Voltage (Bank 2 Sensor 1)

P0152

Ox Sensor Circuit High Voltage (Bank 2 Sensor 1)

P0153

Ox Sensor Circuit Slow Response (Bank 2 Sensor 1)

P0154

Ox Sensor Circuit No Activity Detected (Bank 2 Sensor 1)

P0155

Ox Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)

P0156

Ox Sensor Circuit Malfunction (Bank 2 Sensor 2)

P0157

Ox Sensor Circuit Low Voltage (Bank 2 Sensor 2)

P0158

Ox Sensor Circuit High Voltage (Bank 2 Sensor 2)

P0159

Ox Sensor Circuit Slow Response (Bank 2 Sensor 2)

P0160

Ox Sensor Circuit No Activity Detected (Bank 2 Sensor 2)

P0161

Ox Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

P0162

Ox Sensor Circuit Malfunction (Bank 2 Sensor 3)

P0163

Ox Sensor Circuit Low Voltage (Bank 2 Sensor 3)

P0164

Ox Sensor Circuit High Voltage (Bank 2 Sensor 3)

P0165

Ox Sensor Circuit Slow Response (Bank 2 Sensor 3)

P0166

Ox Sensor Circuit No Activity Detected (Bank 2 Sensor 3)

P0167

Ox Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)

P0170

Fuel Trim Malfunction (Bank 1)

P0171

System Too Lean (Bank 1)

P0172

System Too Rich (Bank 1)

P0173

Fuel Trim Malfunction (Bank 2)

P0174

System Too Lean (Bank 2)

P0175

System Too Rich (Bank 2)

P0176

Fuel Composition Sensor Circuit Malfunction

P0177

Fuel Composition Sensor Circuit Range/Performance

P0178

Fuel Composition Sensor Circuit Low Input

P0179

Fuel Composition Sensor Circuit High Input

P0180

Fuel Temperature Sensor A Circuit Malfunction

P0181

Fuel Temperature Sensor A Circuit Performance

P0182

Fuel Temperature Sensor A Circuit low Input

P0183

Fuel Temperature Sensor A Circuit High Input

P0184

Fuel Temperature Sensor A Circuit Intermittent

P0185

Fuel Temperature Sensor B Circuit Malfunction

P0186

Fuel Temperature Sensor B Circuit Range/Performance

P0187

Fuel Temperature Sensor U Circuit Low Input

P0188

Fuel Temperature Sensor B Circuit High Input

P0189

Fuel Temperature Sensor B Circuit Intermittent

P0190

Fuel Rail Pressure Sensor Circuit Malfunction

P0191

Fuel Rail Pressure Sensor Circuit Range/Performance

P0192

Fuel Rail Pressure Sensor Circuit Low Input

P0193

Fuel Rail Pressure Sensor Circuit High Input

P0194

Fuel Rail Pressure Sensor Circuit Intermittent

P0195

Engine Oil Temperature Sensor Malfunction

P0196

Engine Oil Temperature Sensor Range/Performance

P0197

Engine Oil Temperature Sensor Low

P0198

Engine Oil Temperature Sensor High

P0199

Engine Oil Temperature Sensor Intermittent

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

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