Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2009A6 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 12 (2.0L - TURBO GENERIC SCAN TOOL - MOTRONIC FUEL INJECTION SYSTEM, IGNITION SYSTEM, ENGINE CODE: BPG)ST GENERIC SCAN TOOLDIAGNOSTIC TROUBLE CODE (DTC) TABLESSAE P0XXX-DTCSCONTROL MODULE AND OUTPUT SIGNALS
2009 Audi A6 Base
Control module and output signals
2009 Audi A6 BaseSECTION Control module and output signals
WARNING: This page is about a different car, the 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
| DTC | Error Message | Diagnostic Procedure | Monitor Strategy | Malfunction Criteria and Threshold Value | Secondary Parameters with Enable Conditions | Monitoring Time Length | Frequency of checks, MIL Illum |
|---|---|---|---|---|---|---|---|
| P0600 | Serial Communication Link |
|
Signal check. | No message received from DME or Invalid data, timeout |
|
0.5 Seconds |
|
| P0601 | Internal Control Module Memory Check Sum Error |
|
Internal Check Sum Verification. | Internal check sum, incorrect | 0.5 Seconds |
|
|
| P0604 | Internal Control Module Random Access Memory (RAM) Error |
|
RAM Check. | Write ability check, failed | 0.5 Seconds |
|
|
| P0605 | Internal Control Module Read Only Memory (ROM) Error |
|
EPROM Check. | Check, failed | 0 Seconds |
|
|
| P0606 | ECM/PCM Processor |
|
|
|
0.5 Seconds |
|
|
| P0607 | Control Module Performance |
|
|
SW verify of EEPROM emulation, negative | 0 Seconds |
|
|
| P0614 | ECM/TCM Incompatible |
|
Signal check. | CAN level engine does not fit CAN level transmission |
|
0 Seconds |
|
| P0638 | Throttle Actuator Control Range/Performance - Bank 1 |
|
|
|
|
0.5 Seconds |
|
| P0641 | Sensor Reference Voltage A Circuit/Open |
|
Open Circuit. | Internal communication, failure A | 0.5 Seconds |
|
|
| P0642 | Sensor Reference Voltage A Circuit Low |
|
Out of Range, Low. | Signal voltage, 4.5-5 V | 0.5 Seconds |
|
|
| P0643 | Sensor Reference Voltage A Circuit High |
|
Out of Range, High. | Signal voltage, >5-5.4 V | 0.5 Seconds |
|
|
| P0651 | Sensor Reference Voltage B Circuit/Open |
|
Open Circuit. | Internal communication, failure A | 0.5 Seconds |
|
|
| P0652 | Sensor Reference Voltage B Circuit Low |
|
Out of Range, Low. | Signal voltage, 4.5-5 V | 0.5 Seconds |
|
|
| P0653 | Sensor Reference Voltage B Circuit High |
|
Out of Range, High. | Signal voltage, >5-5.4 V | 0.5 Seconds |
|
|
| P0657 | Actuator Supply Voltage A Circuit/Open |
|
Open Circuit. | Signal voltage, > 4.4-5.6 V |
|
0.5 Seconds |
|
| P0658 | Actuator Supply Voltage A Circuit Low |
|
Short to Ground. | Signal voltage, 2.15-3.25 V |
|
0.5 Seconds |
|
| P0685 | ECM/PCM Power Relay Control Circuit/Open |
|
Open Circuit. |
|
Ignition, off | 0.5 Seconds |
|
| P0686 | ECM/PCM Power Relay Control Circuit Low |
|
Short to Ground. |
|
Ignition, off | 0.5 Seconds |
|
| P0687 | ECM/PCM Power Relay Control Circuit High |
|
Short to Battery (+). |
|
Ignition, off | 0.5 Seconds |
|
| P0688 | ECM/PCM Power Relay Sense Circuit |
|
Signal Range Check. |
|
|
0.5 Seconds |
|
| P0697 | Sensor Reference Voltage C Circuit/Open |
|
Open Circuit. | Internal communication, failure A | 0.5 Seconds |
|
|
| P0698 | Sensor Reference Voltage C Circuit Low |
|
Out of Range, Low. | Signal voltage, 4.5-5 V | 0.5 Seconds |
|
|
| P0699 | Sensor Reference Voltage C Circuit High |
|
Out of Range, High. | Signal voltage, >5-5.4 V | 0.5 Seconds |
|
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.