PowertrainP1790
CautionSeverity: Caution - get it checked when you can
Fault immediately after shift
Key terms: Control module: a small computer that runs one part of the car · 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 30
| Brand | Code | Description | System |
|---|---|---|---|
| BMW | P1790 | implausible signal or value Brand | Powertrain |
| BYD | P1790 | Battery backup line Brand | Powertrain |
| Chery | P1790 | Battery backup line Brand | Powertrain |
| Chrysler | P1790 | Fault Immediately After Shift Brand | Powertrain |
| Daewoo | P1790 | TP (Mechanical) Circuit Brand | Powertrain |
| Daihatsu | P1790 | Shift timing solenoid Brand | Powertrain |
| DFFX | P1790 | Battery backup line Brand | Powertrain |
| DFXK | P1790 | Transmission Range Display Signal: Open Circuit Brand | Powertrain |
| EOBD | P1790 | ST solenoidkrets Brand | Powertrain |
| Fiat | P1790 | Fault immediately after shift Brand | Powertrain |
| Geely | P1790 | Battery backup line Brand | Powertrain |
| GM | P1790 | TP (Mechanical) Circuit Brand | Powertrain |
| Great Wall | P1790 | Battery backup line Brand | Powertrain |
| Hafei | P1790 | Battery backup line Brand | Powertrain |
| Holden | P1790 | Transmission Self Learn Malfunction Brand | Powertrain |
| Honda | P1790 | No description available | Powertrain |
| Hyundai | P1790 | No description available | Powertrain |
| Isuzu | P1790 | No description available | Powertrain |
| Land Rover | P1790 | Throttle position signal system range/performance Brand | Powertrain |
| Mahindra | P1790 | No description available | Powertrain |
| Maserati | P1790 | No description available | Powertrain |
| Mitsubishi | P1790 | Battery backup line Brand | Powertrain |
| Opel | P1790 | TP (Mechanical) Circuit Brand | Powertrain |
| Perodua | P1790 | Shift timing solenoid Brand | Powertrain |
| Peugeot | P1790 | No description available | Powertrain |
| Porsche | P1790 | Druckregler H Kurzschluss nach Plus oder Unterbrechung Brand | Powertrain |
| Proton | P1790 | Battery backup line Brand | Powertrain |
| Saab | P1790 | TP (Mechanical) Circuit Brand | Powertrain |
| Suzuki | P1790 | No description available | Powertrain |
| Toyota | P1790 | Fault immediately after shift 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.
5Related codes
Browse Pxxx codes or P179xx codes.