PowertrainP1661
CautionSeverity: Caution - get it checked when you can
incorrect EWS telegram
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 |
|---|---|---|---|
| Ashok Leyland CV | P1661 | No description available | Powertrain |
| Mercedes-Benz | P1661 | No description available | Powertrain |
| BMW | P1661 | incorrect EWS telegram Brand | Powertrain |
| BYD | P1661 | Multi-way valve circuit open Brand | Powertrain |
| Chery | P1661 | Throttle control position incorrect Brand | Powertrain |
| Chrysler | P1661 | sensor ground reference circuit Brand | Powertrain |
| Daewoo | P1661 | MIL Control Circuit Brand | Powertrain |
| DFXK | P1661 | Coolant Fan Control 2: Short to Plus Brand | Powertrain |
| EOBD | P1661 | Luz Sport Brand | Powertrain |
| Geely | P1661 | Coolant Fan Control 2: Short to Plus Brand | Powertrain |
| GM | P1661 | MIL Control Circuit Brand | Powertrain |
| Great Wall | P1661 | Key identification failed Brand | Powertrain |
| Hyundai | P1661 | No description available | Powertrain |
| Isuzu | P1661 | No description available | Powertrain |
| Land Rover | P1661 | Output circuit check - circuit low Brand | Powertrain |
| Mahindra | P1661 | No description available | Powertrain |
| Mitsubishi | P1661 | No description available | Powertrain |
| Nissan | P1661 | No description available | Powertrain |
| Peugeot | P1661 | No description available | Powertrain |
| Porsche | P1661 | No description available | Powertrain |
| Saab | P1661 | MIL Control Circuit Brand | Powertrain |
| Smart | P1661 | No description available | Powertrain |
| Sprinter | P1661 | ENV_ _Datum2 Brand | Powertrain |
| Suzuki | P1661 | TCM SENSOR GROUND Brand | Powertrain |
| Tata | P1661 | No description available | Powertrain |
| Toyota | P1661 | Sport lamp 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 P1661 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P166100 | Sensor Nebenaggregate- Kühlwassertemperatur Sensordrift Brand | Powertrain |
| Sprinter | P166100 | Sensor Nebenaggregate- Kühlwassertemperatur Sensordrift Brand | Powertrain |
6Related codes
Browse Pxxx codes or P166xx codes.