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.
4-92 Powertrain DTC Charts and Descriptions
Diagnostic Trouble Code (DTC) Charts and Descriptions
P06B8 - Internal Control Module Non-Volatile Random Access Memory (NVRAM) Error
Description: This DTC sets when a concern with the ability of the PCM to correctly store permanent DTCs is present.
Possible Causes: • Low battery voltage
• Battery or charging system concern
• VPWR circuit intermittently short
• VPWR circuit intermittently open
• PWRGND circuit intermittently open
• Damaged run/start relay
Diagnostic Aids: Check for other DTCs and diagnose those first. Check for aftermarket performance products. Check for an
electrical or charging system concern. If an updated calibration is available, update the calibration to the latest level. If an updated calibration is not available, clear the DTCs and repeat the self-test. If this DTC is retrieved after a PCM reprogramming, turn the ignition OFF and allow the PCM to complete a normal power down sequence. If the DTC is retrieved again, install a new PCM. Refer to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM), Programming the VID Block for a Replacement PCM.
Application Key On Engine Off Key On Engine Running Continuous Memory
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.
P06D1 - Internal Control Module Ignition Coil Control Module Performance
Description: This DTC sets when the PCM has detected an error with the ignition coil driver and diagnostic circuit.
Possible Causes: • Aftermarket performance products
• Damaged PCM
Diagnostic Aids: Reprogram or update the calibration.
Check for other DTCs or drive symptoms for further action. Make sure to 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.
P06E9 - Engine Starter Performance
Description:
Possible Causes:
Diagnostic Aids: Refer to the Workshop Manual Section 303-14, Electronic Engine Controls.
Application Key On Engine Off Key On Engine Running Continuous Memory
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.
P0703 - Brake Switch B Input Circuit
Description: This DTC sets when the brake pedal position (BPP) input is missing.
Possible Causes: • BPP circuit open
• BPP circuit short to ground
• Damaged modules connected to the BPP circuit
• Damaged brake switch
• Incorrectly adjusted brake switch
Diagnostic Aids: Check for correct function of the stoplamps. Using a scan tool, check the BPP PID. The stoplamps and PID
should turn ON and OFF with brake pedal activation.
Application Key On Engine Off Key On Engine Running Continuous Memory
Expedition, Verify the brake pedal was applied and released during the key ON engine running (KOER) self-test. For Navigator additional concerns, refer to the Workshop Manual Section 206-09, Vehicle Dynamic Systems.
All others GO to Pinpoint Test FD.
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.