PowertrainP0E99
CautionSeverity: Caution - get it checked when you can
DC/DC Converter Voltage Sensor C Circuit High
Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.
2Common causes
- Sensor or actuator fault
- Wiring or connector fault
- Vacuum or intake leak
- Fuel or ignition problem
- Control module fault
3Can I drive?
Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 8
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0E99 | Aftertreatment System Protection - DOC In Temp High (Normal Operation) Brand | Powertrain |
| Mercedes-Benz | P0E99 | DC/DC Converter Voltage Sensor C Circuit High SAE | Powertrain |
| EOBD | P0E99 | DC/DC konverter senzor napona 'C' krug visok Brand | Powertrain |
| Honda | P0E99 | DC/DC Converter Voltage Sensor C Circuit High SAE | Powertrain |
| Isuzu | P0E99 | DC/DC Converter Voltage Sensor C Circuit High SAE | Powertrain |
| Land Rover | P0E99 | DC/DC Converter Voltage Sensor 'C' Circuit High Brand | Powertrain |
| Suzuki | P0E99 | DC/DC Converter Voltage Sensor 'C' Circuit High Brand | Powertrain |
| Toyota | P0E99 | DC/DC converter voltage sensor 'C' circuit high Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 2
These 7-character codes are manufacturer-specific variants of P0E99 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P0E9900 | Voltage sensor C of the DC/DC converter has a short circuit to positive. Brand | Powertrain |
| Mercedes-Benz | P0E9913 | Voltage sensor C of the DC/DC converter has a short circuit to positive. There is an open circuit. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P0E9xx codes.