Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
B22A9-64ECU Internal Performance-Signal Plausibility Failure
B22A9-17ECU Internal Performance-Circuit Voltage Above Threshold
B22A9-16ECU Internal Performance-Circuit Voltage Below Threshold
Manufacturer communications
95Original wording in English
RAM
Digital Key Control Module (DKCM) Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● B22A9-00 - ECU Internal Performance. The customer may also comment on one or more of the following: ● The Digital Key is successfully p…
CHRYSLER
Flash: Integrated Dual Charge Module (IDCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B22A9-87 - ECU Internal Performance-Missing Message. ● P0D21-00 - Battery Charger "A" Output Volta…
CHRYSLER
Flash: Integrated Dual Charge Module (IDCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B22A9-87 - ECU Internal Performance-Missing Message. ● P0D21-00 - Battery Charger "A" Output Volta…
CHRYSLER
Flash: Integrated Dual Charge Module (IDCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B22A9-87 - ECU Internal Performance-Missing Message. ● P0D21-00 - Battery Charger "A" Output Volta…
Check vehicle applicability
160A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.