PowertrainP08BA
CautionSeverity: Caution - get it checked when you can
ECU power supply voltage exceeds operating range
Key terms: Powertrain: engine, transmission and emissions
1What it means in plain English
This range normally covers the transmission control system, but some manufacturers use P07-P09 codes for unrelated functions (fuel pump control, air-mix motors, lighting or windows). Check the description before assuming it is a transmission fault.
2Common causes
- Low or dirty transmission fluid
- Faulty shift solenoid
- Faulty speed sensor
- Wiring or connector fault
- Internal transmission wear
3Can I drive?
If the transmission slips, jerks, will not shift, or a transmission temperature warning is on, stop driving and let it cool: continuing can cause expensive damage. If the code names a different system (for example the fuel pump), treat it on its own terms; a fuel-pump control failure can stall the car, so have it checked before driving further. Otherwise drive gently to a workshop.
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 6
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P08BA | Camshaft Position Sensor. A Component. Lock Position. (Stuck.) Bank 1 Brand | Powertrain |
| DFFS | P08BA | ECU power supply voltage exceeds operating range Brand | Powertrain |
| EOBD | P08BA | Drukregelklep 'L' Brand | Powertrain |
| Isuzu | P08BA | No description available | Powertrain |
| Land Rover | P08BA | Pressure Control Solenoid 'L' Brand | Powertrain |
| Toyota | P08BA | ECU power supply voltage exceeds operating range 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 4
These 7-character codes are manufacturer-specific variants of P08BA and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P08BA00 | General fault valve K0 Brand | Powertrain |
| Sprinter | P08BA11 | Inplausible high current valve K0 Brand | Powertrain |
| Sprinter | P08BA12 | Shortcut to plus valve K0 Brand | Powertrain |
| Sprinter | P08BA13 | Interruption valve K0 Brand | Powertrain |
6Related codes
Browse Pxxx codes or P08Bxx codes.