Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
Powertrain DTC Charts and Descriptions 4-91
Diagnostic Trouble Code (DTC) Charts and Descriptions
P0690 - Electronic Control Module (ECM)/Powertrain Control Module (PCM) Power Relay Sense Circuit High (Continued)
• Damaged fuel pump relay
• Damaged PCM power relay
Diagnostic Aids:
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test B.
P06A6 - Sensor Reference Voltage A Circuit Range/Performance
Description: This DTC sets when the VREF circuit is not within a calibrated voltage range.
Possible Causes: • VREF circuit short to voltage
• VREF circuit short to ground
• Damaged sensor
Diagnostic Aids: This DTC may set with additional component DTCs.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test C.
P06A7 - Sensor Reference Voltage B Circuit Range/Performance
Description: This DTC sets when the VREF circuit is not within a calibrated voltage range.
Possible Causes: • VREF circuit short to voltage
• VREF circuit short to ground
• Damaged sensor
Diagnostic Aids: This DTC may set with additional component DTCs.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test C.
P06A8 - Sensor Reference Voltage C Circuit Range/Performance
Description: This DTC sets when the VREF circuit is not within a calibrated voltage range.
Possible Causes: • VREF circuit short to voltage
• VREF circuit short to ground
• Damaged sensor
Diagnostic Aids: This DTC may set with additional component DTCs.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test C.
P06B6 - Internal Control Module Knock Sensor Processor 1 Performance
Description: This DTC sets when the PCM has detected an error condition with the knock sensor (KS) processor integrated
circuit.
Possible Causes: • Damaged PCM
Diagnostic Aids: Reprogram or update the calibration. Check for other DTCs or drive symptoms for further action. Check for
aftermarket performance products before installing a new PCM. If it is necessary to install a new PCM, refer to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM).
Application Key On Engine Off Key On Engine Running Continuous Memory
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.
2016 Powertrain Control/Emissions Diagnosis, Gasoline Engines, 3/2015
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.