B2401 Audio tape deck mechanism fault
B2402 Audio CD/DJ thermal shutdown fault
B2403 Audio CD/DJ internal fault
B2404 Audio steering wheel switch circuit fault
B2405 Audio single disc CD player thermal shutdown fault
B2406 Audio single disc CD player internal fault
B2416 Climate control recirculation actuator out of limits
B2425 Remote keyless entry out of synchronization
B2426 Passenger solar radiation sensor circuit open
B2427 Passenger solar radiation sensor circuit short to ground
B2428 A/C post heater sensor #2 circuit failure
B2429 A/C post heater sensor #2 circuit short to ground
B2431 Transponder programming failed
B2432 Driver’s seat belt buckle switch circuit open
B2433 Driver’s seat belt buckle switch circuit short to battery
B2434 Driver’s seat belt buckle switch circuit short to ground
B2435 Driver’s seat belt buckle switch circuit resistance out of range
B2436 Passenger’s seat belt buckle switch circuit open
B2437 Passenger’s seat belt buckle switch circuit short to battery
B2438 Passenger’s seat belt buckle switch circuit short to ground
B2439 Passenger’s seat belt buckle switch circuit resistance out of range
B2440 Passenger side, side crash sensor mount fault
B2441 Driver side, side crash sensor mount fault
B2442 Intrusion sensor fault
B2443 Powertrain performance mode switch circuit failure
B2444 Driver side crash sensor internal fault
B2445 Passenger side crash sensor internal fault
B2446 RESCU/VEMS (Vehicle Emergency Messaging System) input circuit open
B2447 RESCU/VEMS (Vehicle Emergency Messaging System) input short to battery
B2448 RESCU/VEMS (Vehicle Emergency Messaging System) input short to ground
B2449 Aux heater glow plug circuit short to ground
B2450 Aux heater glow plug circuit open
B2451 Aux heater fuel pump circuit short to ground
B2452 Aux heater fuel pump circuit open
B2453 Aux heater blower fan circuit short to ground
B2454 Aux heater blower fan circuit open
B2455 Aux heater blower faulted
B2456 Aux heater coolant sensor cicuit short to ground
B2457 Aux heater coolant sensor cicuit open
B2458 Aux heater overheat sensor circuit short to ground
B2459 Aux heater overheat sensor circuit open
B2460 Aux heater flame sensor circuit short to ground
B2461 Aux heater flame sensor circuit open
B2462 Aux heater flame out fault
B2463 Aux heater overheat fault
B2464 Aux heater start time exceeded
B2465 Aux heater start counter overrun/system locked
B2466 Aux heater overheat counter overrun/system locked
B2467 Aux heater coll down time exceeded
B2468 Aux heater coolant pump circuit short to ground
B2469 Aux heater coolant pump circuit open
B2470 Interior fan control circuit short to ground
B2471 Interior fan control circuit open
B2472 Fog lamp switch failure
B2473 Passenger door disarm switch circuit failure
B2474 Passenger door lock switch circuit short to ground
B2475 Passenger door unlock switch circuit short to ground
B2476 Radio present switch circuit failure
B2477 Module configuration failure
B2478 Anti theft input signal short to ground
B2479 Brake park switch circuit short to ground
B2480 LF corner lamp output circuit short to battery
B2481 Convertible top up/down switch fault
B2482 RF corner lamp output circuit short to battery
B2483 Enable circuit open circuit
B2484 Disable signal short to ground
B2485 LF side repeater lamp output circuit short to battery
B2487 RF side repeater lamp output circuit short to battery
B2489 Underhood lamp output circuit failure
B2490 Underhood lamp output circuit short to battery
B2491 RF park lamp output circuit short to battery
B2492 Already programmed (test mode DTC only)
B2493 LF park lamp output circuit short to battery
B2494 Anti theft horn output circuit short to battery
B2495 Anti theft horn output circuit failure
B2496 Anti theft horn output circuit short to ground
B2499 Courtesy lamp output failure

C0000 – Vehicle Speed Information Circuit Malfunction
C0035 – Left Front Wheel Speed Circuit Malfunction
C0040 – Right Front Wheel Speed Circuit Malfunction
C0041 – Right Front Wheel Circuit Range/Performance (EBCM)
C0045 – Left Rear Wheel Speed Circuit Malfunction
C0046 – Left Rear Wheel Speed Sensor Circuit Range/Performance (EBCM)
C0050 – Right Rear Wheel Speed Circuit Malfunction
C0051 – LF Wheel Speed Sensor Circuit Range/Performance (EBCM)
C0060 – Left Front ABS Solenoid #1 Circuit Malfunction
C0065 – Left Front ABS Solenoid #2 Circuit Malfunction
C0070 – Right Front ABS Solenoid #1 Circuit Malfunction
C0075 – Right Front ABS Solenoid #2 Circuit Malfunction
C0080 – Left Rear ABS Solenoid #1 Circuit Malfunction
C0085 – Left Rear ABS Solenoid #2 Circuit Malfunction
C0090 – Right Rear ABS Solenoid #1 Circuit Malfunction
C0095 – Right Rear ABS Solenoid #2 Circuit Malfunction
C0110 – Pump Motor Circuit Malfunction
C0121 – Valve Relay Circuit Malfunction
C0128 – Low Brake Fluid Circuit Low
C0141 – Left TCS Solenoid #1 Circuit Malfunction
C0146 – Left TCS Solenoid #2 Circuit Malfunction
C0151 – Right TCS Solenoid #1 Circuit Malfunction
C0156 – Right TCS Solenoid #2 Circuit Malfunction
C0161 – ABS/TCS Brake Switch Circuit Malfunction
C0221 – Right Front Wheel Speed Sensor Circuit Open
C0222 – Right Front Wheel Speed Signal Missing
C0223 – Right Front Wheel Speed Signal Erratic
C0225 – Left Front Wheel Speed Sensor Circuit Open
C0226 – Left Front Wheel Speed Signal Missing
C0227 – Left Front Wheel Speed Signal Erratic
C0229 – Drop Out of Front Wheel Speed Signals
C0235 – Rear Wheel Speed Signal Circuit Open
C0236 – Rear Wheel Speed Signal Circuit Missing
C0237 – Rear Wheel Speed Signal Erratic
C0238 – Wheel Speed Mismatch
C0241 – EBCM Control Valve Circuit
C0245 – Wheel Speed Sensor Frequency Error
C0254 – EBCM Control Valve Circuit
C0265 – EBCM Relay Circuit
C0266 – EBCM Relay Circuit
C0267 – Pump Motor Circuit Open/Shorted
C0268 – Pump Motor Circuit Open/Shorted
C0269 – Excessive Dump/Isolation Time
C0271 – EBCM Malfunction
C0272 – EBCM Malfunction
C0273 – EBCM Malfunction
C0274 – Excessive Dump/Isolation Time
C0279 – Powertrain Configuration Not Valid
C0281 – Brake Switch Circuit
C0283 – Traction Switch Shorted to Ground
C0284 – EBCM Malfunction
C0286 – ABS Indicator Lamp Circuit Shorted to B+
C0287 – Delivered Torque Circuit
C0288 – Brake Warning Lamp Circuit Shorted to B+
C0290 – Lost Communications With PCM
C0292 – Lost Communications With PCM
C0291 – Lost Communications With BCM
C0297 – Powertrain Configuration Data Not Received
C0298 – Powertrain Indicated Traction Control Malfunction
C0300 – Rear Speed Sensor Malfunction
C0305 – Front Speed Sensor Malfunction
C0306 – Motor A or B Circuit
C0308 – Motor A/B Circuit Low
C0309 – Motor A/B Circuit High
C0310 – Motor A/B Circuit Open
C0315 – Motor Ground Circuit Open
C0321 – Transfer Case Lock Circuit
C0323 – T-Case Lock Circuit Low
C0324 – T-Case Lock Circuit High
C0327 – Encoder Circuit Malfunction
C0357 – Park Switch Circuit High
C0359 – Four Wheel Drive Low Range (4LO) Discrete Output Circuit
C0362 – 4LO Discrete Output Circuit High
C0367 – Front Axle Control Circuit High
C0374 – General System Malfunction
C0376 – Front/Rear Shaft Speed Mismatch
C0379 – Front Axle System
C0387 – Unable to Perform Shift
C0472 – Steering Handwheel Speed Sensor Signal V Low
C0473 – Steering Handwheel Speed Sensor Signal V High
C0495 – EVO Tracking Error
C0498 – Steering Assist Control Actuator Feed Circuit Low
C0499 – Steering Assist Control Solenoid Feed Circuit High
C0503 – Steering Assist Control Solenoid Return Circuit Low
C0504 – Steering Assist Control Solenoid Return Circuit High
C0550 – ECU Malfunction – internal write / checksum malfunction
C0559 – EEPROM Checksum Error
C0563 – Calibration ROM Checksum Error
C0577 – Left Front Solenoid Circuit Low
C0578 – Left Front Solenoid Circuit High
C0579 – Left Front Solenoid Circuit Open
C0582 – Right Front Solenoid Circuit Low
C0583 – Right Front Solenoid Circuit High
C0584 – Right Front Solenoid Circuit Open
C0587 – Left Rear Solenoid Circuit Low
C0588 – Left Rear Solenoid Circuit High
C0589 – Left Rear Solenoid Circuit Open
C0592 – Right Rear Solenoid Circuit Low
C0593 – Right Rear Solenoid Circuit High
C0594 – Right Rear Solenoid Circuit Open
C0611 – VIN Information Error
C0615 – Left Front Position Sensor Malfunction
C0620 – Right Front Position Sensor Malfunction
C0625 – Left Rear Position Sensor Malfunction
C0628 – Level Control Position Sensor Circuit High
C0630 – Right Rear Position Sensor Malfunction
C0635 – Left Front Normal Force Circuit Malfunction
C0638 – Left Front Normal Force Circuit High
C0640 – Right Front Normal Force Circuit Malfunction
C0643 – Right Front Normal Force Circuit High
C0655 – Level Control Compressor Relay Malfunction
C0657 – Level Control Compressor Circuit Low
C0658 – Level Control Compressor Circuit High
C0660 – Level Control Exhaust Valve Circuit Malfunction
C0662 – Level Control Exhaust Valve Circuit Low
C0663 – Level Control Exhaust Valve Circuit High
C0665 – Chassis Pitch Signal Circuit
C0690 – Damper Control Relay Circuit Malfunction
C0691 – Damper Control Relay Circuit Range
C0693 – Damper Control Relay Circuit High
C0695 – Position Sensor Overcurrent (8 volt supply)
C0696 – Position Sensor Overcurrent (5 volt supply)
C0710 – Steering Position Signal Malfunction
C0750 – Tire Pressure Monitor (TPM) system sensor not transmitting
C0755 – Tire Pressure Monitor (TPM) system sensor not transmitting
C0760 – Tire Pressure Monitor (TPM) system sensor not transmitting
C0765 – Tire Pressure Monitor (TPM) system sensor not transmitting
C0800 – Device Power #1 Circuit Malfunction
C0896 – Electronic Suspension Control (ESC) voltage is outside the normal range of 9 to 15.5 volts

P1602

Loss of EBTCM Serial Data

P1603

Loss of SDM Serial Data

P1604

Loss of IPC Serial Data

P1605

Loss of HVACC Serial Data

P1605

Keep Alive Memory Failure (Ford)

P1605

Powertrain Control Module (Mazda)

P1607

Malfunction In PCM Internal Circuit (Acura)

P1610

Loss of PZM Serial Data

P1611

Loss of CVRTD Serial Data

P1617

Engine Oil Level Switch Circuit

P1621

PCM Memory Performance

P1626

Theft Deterrent System – Fuel Enable Circuit

P1630

Theft Deterrent – PCM in Learn Mode

P1631

Theft Deterrent – Password Incorrect

P1632

Theft Deterrent – Fuel Disabled

P1633

Ignition Supplement Power Circuit Low Voltage

P1633

Keep Alive Power Voltage Too Low (Ford)

P1634

Ignition 1 Power Circuit Low Voltage

P1635

5 Volt Reference Circuit (GM)

P1635

Tire/Axle Out Of Acceptable Range (Ford)

P1639

5 Volt Reference 2 Circuit (GM)

P1639

Vehicle ID Block Not Programmed Or Corrupt (Ford)

P1640

DTC’s Available In Another Module (Ford)

P1640

Driver 1 – Input High Voltage

P1641

Malfunction Indicator Lamp (MIL) Control Circuit

P1642

Vehicle Speed Output Circuit

P1644

Delivered Torque Output Circuit

P1645

EVAP Solenoid Output Circuit

P1646

EVAP Vent Valve Output Circuit

P1650

Driver 2 – Input High Voltage

P1650

Power Steering Pressure Switch Malfunction (Ford)

P1650

Power Steering Pressure Switch Out Of Range (Mazda)

P1651

Power Steering Pressure Switch Input Malfunction (Mazda)

P1651

Power Steering Pressure Switch Signal Malfunction (Ford)

P1652

Lift/Dive Circuit

P1654

Cruise Disable Output Circuit

P1656

Automatic Transaxle (Acura)

P1660

Cooling Fan Control Circuits

P1660

A/T FI Data Line Failure (Acura)

P1676

FPTDR Signal Failure (Acura)

P1678

FPTDR Signal Line Failure (Acura)

P1680

Clutch Released Switch Circuit (CHRYSLER)

P1681

No I/P Cluster CCD/J1850 Messages Received (CHRYSLER)

P1681

A/T FI Signal A Low Input (Acura)

P1682

A/T FI Signal A High Input (Acura)

P1682

Charging System Voltage Too Low (CHRYSLER)

P1683

Speed Control Power Relay or S/C 12V Driver Circuit (CHRYSLER)

P1685

Skim Invalid Key(CHRYSLER)

P1686

No SKIM Bus Message Received (CHRYSLER)

P1686

A/T FI Signal B Low Input (Acura)

P1687

A/T FI Signal B High Input (Acura)

P1687

No Cluster Bus Message (CHRYSLER)

P1689

Traction Control Delivered Torque Output Circuit (GM)

P1693

DTC Detected In Companion Mode (CHRYSLER)

P1694

Fault In Companion Mode (CHRYSLER)

P1695

No CCD/J185O Message From BCM (CHRYSLER)

P1696

PCM Failure EEPROM Write Denied (CHRYSLER)

P1697

PCM Failure SRI Mile Not Stored (CHRYSLER)

P1698

No Bus Message From TCM (CHRYSLER)

OBD II Code P0116
Engine Coolant Temperature Circuit Range/Performance Problem

Our emissions expert has put together the following information about the P0116 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 P0116
Fault Code Definition
The Engine Coolant Temperature Sensor measures the rise and fall of the Engine Coolant Temperature. This provides critical data needed for the Powertrain Control Module (PCM) to control the Air Fuel Ratio, the Ignition Spark Timing, the cooling fans, and many components of the Emissions Control Systems. Code P0116 indicates a performance problem with the sensor signal to the Powertrain Control Module.

Symptoms

Check Engine Light will illuminate
In many cases, no abnormal symptoms may be noticed
In some cases, the engine may be hard starting and/or get poor fuel economy
Common Problems That Trigger the P0116 Code

Defective Engine Coolant Temperature Sensor
Rusty and/or corroded Engine Coolant
Faulty or corroded Engine Coolant Temperature wiring or connections

Common Misdiagnoses

Engine Coolant Temperature Sensor is replaced when the real cause is rusty coolant
Engine Coolant Temperature Sensor is replaced when the real cause is a poor connection or chafed wiring
Engine Coolant Temperature Sensor is replaced when the real problem is in the Cooling System

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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