P064C

Technical Definition:

Glow Plug Control Module

Trouble Code: P064C
Address: 0x064C
System: Powertrain
Subsystem:

Technical Description:

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OBD-II Trouble Code Type:

Diagnostic Step:

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Specific Makes:

P064B

Technical Definition:

PTO Control Module

Trouble Code: P064B
Address: 0x064B
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

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OBD-II Trouble Code Type:

Diagnostic Step:

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Specific Makes:

P064A

Technical Definition:

Fuel Pump Control Module

Trouble Code: P064A
Address: 0x064A
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

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OBD-II Trouble Code Type:

Diagnostic Step:

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Specific Makes:

P0649

Technical Definition:

Speed Control Lamp Control Circuit

Trouble Code: P0649
Address: 0x0649
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Speed Control Lamp Control Circuit

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P0648

Technical Definition:

Immobilizer Lamp Control Circuit

Trouble Code: P0648
Address: 0x0648
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Immobilizer Lamp Control Circuit

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

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Specific Makes:

P0647

Technical Definition:

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

Trouble Code: P0647
Address: 0x0647
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Air Conditioning Clutch Relay Circuit High

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Air Conditioning Clutch Relay
– Air Conditioning Clutch Relay harness is open or shorted
– Air Conditioning Clutch Relay circuit poor electrical connection

Specific Makes:

P0646

Technical Definition:

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

Trouble Code: P0646
Address: 0x0646
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Air Conditioning Clutch Relay Circuit Low

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Air Conditioning Clutch Relay
– Air Conditioning Clutch Relay harness is open or shorted
– Air Conditioning Clutch Relay circuit poor electrical connection

Specific Makes:

P0645

Technical Definition:

Air Conditioning (A/C) Clutch Relay Control Circuit

Trouble Code: P0645
Address: 0x0645
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Air Conditioning Clutch Relay Circuit Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Air Conditioning Clutch Relay
– Air Conditioning Clutch Relay harness is open or shorted
– Air Conditioning Clutch Relay circuit poor electrical connection

Specific Makes:

P0644

Technical Definition:

Driver Display Serial Communication Circuit

Trouble Code: P0644
Address: 0x0644
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Driver Display Serial Communication Circuit

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P0643

Technical Definition:

Sensor Reference Voltage A Circuit High

Trouble Code: P0643
Address: 0x0643
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P0642

Technical Definition:

Sensor Reference Voltage A Circuit Low

Trouble Code: P0642
Address: 0x0642
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P0641

Technical Definition:

Sensor Reference Voltage A Circuit / Open

Trouble Code: P0641
Address: 0x0641
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P0640

Technical Definition:

Intake Air Heater Control Circuit

Trouble Code: P0640
Address: 0x0640
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Manifold Intake Air Heater

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Intake Air Heater
– Intake Air Heater harness is open or shorted
– Intake Air Heater circuit poor electrical connection

Specific Makes:

P063F

Technical Definition:

Auto Configuration Engine Coolant Temperature (ECT) Input Not Present

Trouble Code: P063F
Address: 0x063F
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P063E

Technical Definition:

Auto Configuration Throttle Input Not Present

Trouble Code: P063E
Address: 0x063E
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P063D

Technical Definition:

Generator Voltage Sensor Circuit High

Trouble Code: P063D
Address: 0x063D
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P063C

Technical Definition:

Generator Voltage Sensore Circuit Low

Trouble Code: P063C
Address: 0x063C
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P063B

Technical Definition:

Generator Voltage Sensore Circuit Range / Performance

Trouble Code: P063B
Address: 0x063B
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P063A

Technical Definition:

Generator Voltage Sensore Circuit

Trouble Code: P063A
Address: 0x063A
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P0639

Technical Definition:

Throttle Actuator Control Range / Performance (Bank 2)

Trouble Code: P0639
Address: 0x0639
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits