Volkswagen fault codes
3,421 codes · 292 vehicle records · 248 ECU records · 0 live-data parameters
Codes 3,421
| Code | Description | Brands | System |
|---|---|---|---|
| P0646 | A/C Clutch Relay Control Circuit Low | 35 | Powertrain |
| P0647 | A/C Clutch Relay Control Circuit High | 35 | Powertrain |
| P0648 | Immobilizer Lamp Control Circuit | 25 | Powertrain |
| P0649 | Speed Control Lamp Control Circuit | 28 | Powertrain |
| P064C | Glow Plug Control Module 1 | 28 | Powertrain |
| P0651 | Sensor Reference Voltage B Circuit/Open | 39 | Powertrain |
| P065100 | Sensor Reference Voltage 'B' Circuit/Open | 3 | Powertrain |
| P0652 | Sensor Reference Voltage B Circuit Low | 34 | Powertrain |
| P0653 | Sensor Reference Voltage B Circuit High | 36 | Powertrain |
| P0655 | Engine Hot Lamp Output Control Circuit | 28 | Powertrain |
| P0660 | Intake Manifold Tuning Valve Control Circuit/Open (Bank 1) | 34 | Powertrain |
| P0661 | Intake Manifold Tuning Valve Control Circuit Low (Bank 1) | 33 | Powertrain |
| P0662 | Intake Manifold Tuning Valve Control Circuit High (Bank 1) | 33 | Powertrain |
| P0666 | Control Module Internal Temperature Sensor A Circuit | 32 | Powertrain |
| P066A | Cylinder 1 Glow Plug Control Circuit Low | 30 | Powertrain |
| P066B | Cylinder 1 Glow Plug Control Circuit High | 27 | Powertrain |
| P066C | Cylinder 2 Glow Plug Control Circuit Low | 30 | Powertrain |
| P066D | Cylinder 2 Glow Plug Control Circuit High | 27 | Powertrain |
| P066E | Cylinder 3 Glow Plug Control Circuit Low | 30 | Powertrain |
| P066F | Cylinder 3 Glow Plug Control Circuit High | 27 | Powertrain |
| P0670 | Glow Plug Control Module 1 Control Circuit/Open | 34 | Powertrain |
| P0671 | Cylinder 1 Glow Plug Circuit/Open | 31 | Powertrain |
| P0672 | Cylinder 2 Glow Plug Circuit/Open | 31 | Powertrain |
| P0673 | Cylinder 3 Glow Plug Circuit/Open | 31 | Powertrain |
| P0674 | Cylinder 4 Glow Plug Circuit/Open | 32 | Powertrain |
| P0675 | Cylinder 5 Glow Plug Circuit/Open | 27 | Powertrain |
| P0676 | Cylinder 6 Glow Plug Circuit/Open | 27 | Powertrain |
| P0677 | Cylinder 7 Glow Plug Circuit/Open | 26 | Powertrain |
| P0678 | Cylinder 8 Glow Plug Circuit/Open | 26 | Powertrain |
| P067A | Cylinder 4 Glow Plug Control Circuit Low | 30 | Powertrain |
| P067B | Cylinder 4 Glow Plug Control Circuit High | 27 | Powertrain |
| P067C | Glow Plug 5 Control Circuit Low | 25 | Powertrain |
| P067D | Glow Plug 5 Control Circuit High | 24 | Powertrain |
| P067E | Glow Plug 6 Control Circuit Low | 25 | Powertrain |
| P067F | Glow Plug 6 Control Circuit High | 24 | Powertrain |
| P0683 | Glow Plug Control Module 1 to PCM Communication Circuit | 30 | Powertrain |
| P0684 | Glow Plug Control Module 1 to PCM Communication Circuit Range/Performance | 30 | Powertrain |
| P0685 | ECM/PCM Power Relay Control Circuit/Open | 40 | Powertrain |
| P0686 | ECM/PCM Power Relay Control Circuit Low | 32 | Powertrain |
| P0687 | ECM/PCM Power Relay Control Circuit High | 33 | Powertrain |
| P0688 | ECM/PCM Power Relay Sense Circuit/Open | 33 | Powertrain |
| P0689 | ECM/PCM Power Relay Sense Circuit Low | 24 | Powertrain |
| P068A | ECM/PCM Power Relay De-Energized Performance - Too Early | 33 | Powertrain |
| P068B | ECM/PCM Power Relay De-Energized Performance Too Late | 31 | Powertrain |
| P068C | ECU internal fault (center 1st row pretensioner ignition system) | 23 | Powertrain |
| P068D | Glow Plug 7 Control Circuit High | 23 | Powertrain |
| P068E | Glow Plug 8 Control Circuit Low | 23 | Powertrain |
| P068F | Glow Plug 8 Control Circuit High | 23 | Powertrain |
| P0690 | ECM/PCM Power Relay Sense Circuit High | 24 | Powertrain |
| P0691 | Fan 1 Control Circuit Low | 35 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.