PowertrainP1665
CautionSeverity: Caution - get it checked when you can
Injection pump control module communications
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 26
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P1665 | No description available | Powertrain |
| BMW | P1665 | incorrect random code Brand | Powertrain |
| BYD | P1665 | Hydraulic oil cooling valve circuit short to ground Brand | Powertrain |
| Chery | P1665 | A/C defrost temp diagnosis Brand | Powertrain |
| Chrysler | P1665 | No description available | Powertrain |
| Daewoo | P1665 | Driver 3 Line 5 Brand | Powertrain |
| DFFS | P1665 | Wake-up signal (RCD) circuit short circuit to power supply Brand | Powertrain |
| DFXK | P1665 | Control Circuit for PD Injectors: Malfunction Brand | Powertrain |
| EOBD | P1665 | Juht 3 liin 5 Brand | Powertrain |
| Ford | P1665 | No description available | Powertrain |
| Geely | P1665 | Control Circuit for PD Injectors: Malfunction Brand | Powertrain |
| GM | P1665 | Driver 3 Line 5 Brand | Powertrain |
| Great Wall | P1665 | Monitoring control SPI communication fault Brand | Powertrain |
| Holden | P1665 | Engine Oil Pressure Output Circuit Brand | Powertrain |
| Hyundai | P1665 | No description available | Powertrain |
| Isuzu | P1665 | No description available | Powertrain |
| Land Rover | P1665 | If is also set, investigate this first Brand | Powertrain |
| Maserati | P1665 | No description available | Powertrain |
| Mazda | P1665 | No description available | Powertrain |
| Opel | P1665 | Driver 3 Line 5 Brand | Powertrain |
| Peugeot | P1665 | No description available | Powertrain |
| Porsche | P1665 | Schubumluftventil Brand | Powertrain |
| Saab | P1665 | Driver 3 Line 5 Brand | Powertrain |
| Sprinter | P1665 | ENV_ _Datum3 Brand | Powertrain |
| Tata | P1665 | No description available | Powertrain |
| Toyota | P1665 | Injection pump control module communications 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 P1665 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P166500 | Sensor Brennraumdruck Zylinder 1 Modellplausibilitätsfehler Brand | Powertrain |
| Sprinter | P166500 | Sensor Brennraumdruck Zylinder 1 Modellplausibilitätsfehler Brand | Powertrain |
6Related codes
Browse Pxxx codes or P166xx codes.