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Home >> Audi >> 2009 >> S4 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 4.2L - Generic Scan Tool, Engine Code(S): BHF >> Generic Scan Tool >> Diagnostic Trouble Code (DTC) tables >> SAE P0xxx-DTCs >> Control module and output signals
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Control module and output signals

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum
P0601 Internal Control Module Memory Check Sum Error Internal check sum, incorrect   0.5 Sec
  • Continuous
  • 2 DCY
P0602 Control Module Programming Error Reprogramming not completed   0.5 Sec
  • Continuous
  • 2 DCY
P0604 Internal Control Module Random Access Memory (RAM) Error Write ability check, failed   0.5 Sec
  • Continuous
  • 2 DCY
P0605 Internal Control Module Read Only Memory (ROM) Error ROM area check Check, failed.   0.5 Sec
  • Continuous
  • 2 DCY
P0606 ECM/PCM Processor Failed --- 0.5 Sec
  • Continuous
  • 2 DCY
P0613 TCM Processor Check-calculation of 1st CPU failed, Single reset does not cover problem --- 0.5 Sec
  • Continuous
  • 2 DCY
P0614 ECM/TCM Incompatible Detection of error signal
  • CAN bus, Active
  • ECU communication, Active
  • ECU data update, Active
 250 ms
  • Continuous
  • 2 DCY
P062B Injector Valves Communication CPU   Engine speed, >80 RPM 2 Seconds
  • Continuous
  • 2 DCY
P0638 Throttle Actuator Control Range/Performance - Bank 1
  • Time to open over reference point + 12%, > 0.14 Sec.
  • Time to close below reference point, + 3%, > 0.56 Sec.
  • Ignition, On
  • Engine speed, 0 RPM
  • IAT, > 5°C
  • Vehicle speed, 0 MPH
  • ECT, > 5°C
 5 Sec
  • Continuous
  • 2 DCY
P0641 Sensor Reference Voltage A Circuit/Open Internal Fault   0.4 Seconds
  • Continuous
  • 2 DCY
P0642 Sensor Reference Voltage A Circuit Low Signal voltage, 4.6-5 V   0.4 Seconds
  • Continuous
  • 2 DCY
P0643 Sensor Reference Voltage A Circuit High Signal voltage, >4.5-5.4 V   0.4 Seconds
  • Continuous
  • 2 DCY
P0651 Sensor Reference Voltage B Circuit/Open Internal Fault   0.4 Seconds
  • Continuous
  • 2 DCY
P0652 Sensor Reference Voltage B Circuit Low Signal voltage, 4.6-5 V   0.4 Seconds
  • Continuous
  • 2 DCY
P0653 Sensor Reference Voltage B Circuit High Signal voltage, >4.5-5.4 V   0.4 Seconds
  • Continuous
  • 2 DCY
P0657 Actuator Supply Voltage A Circuit/Open
  • Check Engine Component Power Supply Relay J757
 Signal voltage, > 4.4-5.6 V
  • Relay, Commanded off
  • Engine speed, > 40 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0658 Actuator Supply Voltage A Circuit Low Signal voltage, 2.15-3.25 V
  • Relay, Commanded off
  • Engine speed, 40 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0659 Actuator Supply Voltage "A" Circuit High Signal current >1.1 A
  • Relay, Commanded on
  • Engine speed, 40 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0685 ECM/PCM Power Relay Control Circuit/Open
  • Control voltage, > 0.7 V
  • Sense circuit voltage, 4.0 V
   0.5 Seconds
  • Continuous
  • 2 DCY
P0686 ECM/PCM Power Relay Control Circuit Low
  • Control voltage, 0.51 V
  • Sense circuit voltage, > 5.5 V
   0.5 Seconds
  • Continuous
  • 2 DCY
P0687 ECM/PCM Power Relay Control Circuit High
  • Control voltage > 4.0 V
  • Sense circuit voltage, 4.0 V
   0.5 Seconds
  • Continuous
  • 2 DCY
P0688 ECM/PCM Power Relay Sense Circuit
  • Check voltage supply for Engine Control Module (ECM) J623 → Voltage supply, checking .
  • Check activation of Motronic Engine Control Module (ECM) Power Supply Relay J271.
  • Sense voltage, 4.0 V
  • Main relay, Commanded on
 2 Sec
  • Continuous
  • 2 DCY
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