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OBD II CSU

OBD II Research Center

P1657

Technical Definition:

CAN Link Chip Malfunction

Trouble Code: P1657
Address: 0x1657
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1657
  • OBD P1657
  • OBD2 P1657
  • P1657 DTC
  • P1657 OBD-II
  • Trouble Code P1657
  • Leave a comment

P1656

Technical Definition:

CAN Link PCM/PCM Circuit/Network

Trouble Code: P1656
Address: 0x1656
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1656
  • OBD P1656
  • OBD2 P1656
  • P1656 DTC
  • P1656 OBD-II
  • Trouble Code P1656
  • Leave a comment

P1655

Technical Definition:

Starter Disable Circuit

Trouble Code: P1655
Address: 0x1655
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Starter Disable Circuit Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1655
  • OBD P1655
  • OBD2 P1655
  • P1655 DTC
  • P1655 OBD-II
  • Trouble Code P1655
  • Leave a comment

P1654

Technical Definition:

Recirculation Override Circuit

Trouble Code: P1654
Address: 0x1654
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Recirculation Override Circuit Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1654
  • OBD P1654
  • OBD2 P1654
  • P1654 DTC
  • P1654 OBD-II
  • Trouble Code P1654
  • Leave a comment

P1653

Technical Definition:

Power Steering Output Circuit

Trouble Code: P1653
Address: 0x1653
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Power Steering Output Circuit Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1653
  • OBD P1653
  • OBD2 P1653
  • P1653 DTC
  • P1653 OBD-II
  • Trouble Code P1653
  • Leave a comment

P1652

Technical Definition:

Idle Air Control Monitor Disabled By PSPS Failed On

Trouble Code: P1652
Address: 0x1652
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

IAC Monitor Disabled by PSP Switch Failed On

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1652
  • OBD P1652
  • OBD2 P1652
  • P1652 DTC
  • P1652 OBD-II
  • Trouble Code P1652
  • Leave a comment

P1651

Technical Definition:

Power Steering Pressure Switch Input

Trouble Code: P1651
Address: 0x1651
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

PSP Switch Input Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1651
  • OBD P1651
  • OBD2 P1651
  • P1651 DTC
  • P1651 OBD-II
  • Trouble Code P1651
  • Leave a comment

P1650

Technical Definition:

Power Steering Pressure Switch Out Of Self Test Range

Trouble Code: P1650
Address: 0x1650
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

PSP Switch Out of Self Test Range

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1650
  • OBD P1650
  • OBD2 P1650
  • P1650 DTC
  • P1650 OBD-II
  • Trouble Code P1650
  • Leave a comment

P164E

Technical Definition:

Internal Control Module TR Select Performance

Trouble Code: P164E
Address: 0x164E
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P164E
  • OBD P164E
  • OBD2 P164E
  • P164E DTC
  • P164E OBD-II
  • Trouble Code P164E
  • Leave a comment

P164D

Technical Definition:

All Wheel Drive ID Block Corrupted, Not Programmed

Trouble Code: P164D
Address: 0x164D
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P164D
  • OBD P164D
  • OBD2 P164D
  • P164D DTC
  • P164D OBD-II
  • Trouble Code P164D
  • Leave a comment

P164C

Technical Definition:

Internal Control Module Start/Stop Performance

Trouble Code: P164C
Address: 0x164C
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P164C
  • OBD P164C
  • OBD2 P164C
  • P164C DTC
  • P164C OBD-II
  • Trouble Code P164C
  • Leave a comment

P164B

Technical Definition:

O2 Sensor Positive Current Trim Circuit Performance (Bank 2 Sensor 1)

Trouble Code: P164B
Address: 0x164B
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P164B
  • OBD P164B
  • OBD2 P164B
  • P164B DTC
  • P164B OBD-II
  • Trouble Code P164B
  • Leave a comment

P164A

Technical Definition:

O2 Sensor Positive Current Trim Circuit Performance (Bank 1 Sensor 1)

Trouble Code: P164A
Address: 0x164A
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P164A
  • OBD P164A
  • OBD2 P164A
  • P164A DTC
  • P164A OBD-II
  • Trouble Code P164A
  • Leave a comment

P1649

Technical Definition:

Fuel Injection Pump Module

Trouble Code: P1649
Address: 0x1649
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1649
  • OBD P1649
  • OBD2 P1649
  • P1649 DTC
  • P1649 OBD-II
  • Trouble Code P1649
  • Leave a comment

P1648

Technical Definition:

Knock Sensor Input Chip

Trouble Code: P1648
Address: 0x1648
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1648
  • OBD P1648
  • OBD2 P1648
  • P1648 DTC
  • P1648 OBD-II
  • Trouble Code P1648
  • Leave a comment

P1647

Technical Definition:

Linear O2 Sensor Control Chip (Bank 2)

Trouble Code: P1647
Address: 0x1647
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1647
  • OBD P1647
  • OBD2 P1647
  • P1647 DTC
  • P1647 OBD-II
  • Trouble Code P1647
  • Leave a comment

P1646

Technical Definition:

Linear O2 Sensor Control Chip (Bank 1)

Trouble Code: P1646
Address: 0x1646
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1646
  • OBD P1646
  • OBD2 P1646
  • P1646 DTC
  • P1646 OBD-II
  • Trouble Code P1646
  • Leave a comment

P1645

Technical Definition:

Fuel Pump Resistor Switch Circuit

Trouble Code: P1645
Address: 0x1645
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Fuel Pump Resistor Switch Circuit Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1645
  • OBD P1645
  • OBD2 P1645
  • P1645 DTC
  • P1645 OBD-II
  • Trouble Code P1645
  • Leave a comment

P1644

Technical Definition:

Fuel Pump Speed Control Circuit

Trouble Code: P1644
Address: 0x1644
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Fuel Pump Speed Control Circuit Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1644
  • OBD P1644
  • OBD2 P1644
  • P1644 DTC
  • P1644 OBD-II
  • Trouble Code P1644
  • Leave a comment

P1643

Technical Definition:

CAN Link Engine Control Module/Transmission Control Module Circuit/Network

Trouble Code: P1643
Address: 0x1643
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Fuel Pump Monitor Circuit Low Input

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

  • Error P1643
  • OBD P1643
  • OBD2 P1643
  • P1643 DTC
  • P1643 OBD-II
  • Trouble Code P1643
  • Leave a comment

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