PowertrainP1688
CautionSeverity: Caution - get it checked when you can
W11 engine: Fault code stored
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 | P1688 | No description available | Powertrain |
| BMW | P1688 | W11 engine: Fault code stored Brand | Powertrain |
| BYD | P1688 | Oil pump pressure too low Brand | Powertrain |
| Chery | P1688 | Powertrain Data Bus: Implausible Message from AWD Controller Brand | Powertrain |
| Daewoo | P1688 | Internal Fuel Inj Pump Ctrller Failure Brand | Powertrain |
| DFXK | P1688 | Powertrain Data Bus: Implausible Message from AWD Controller Brand | Powertrain |
| EOBD | P1688 | Immobilizer lock Brand | Powertrain |
| Ford | P1688 | MIL ON, P1687, & Lack Of Power Brand | Powertrain |
| Geely | P1688 | Powertrain Data Bus: Implausible Message from AWD Controller Brand | Powertrain |
| GM | P1688 | Internal Fuel Inj Pump Ctrller Failure Brand | Powertrain |
| Great Wall | P1688 | Swirl valve cold state control deviation fault Brand | Powertrain |
| Holden | P1688 | Throttle Actuator Control (TAC) Motor Control Circuit Brand | Powertrain |
| Hyundai | P1688 | No description available | Powertrain |
| Isuzu | P1688 | No description available | Powertrain |
| Land Rover | P1688 | Metering Oil Pump Stepping Motor Cont. Circuit Brand | Powertrain |
| Maserati | P1688 | Exhaust Gas Recirculation (EGR) Actuator Control Circuit High - Positive Side Brand | Powertrain |
| Mazda | P1688 | MIL ON, P1687, & Lack Of Power Brand | Powertrain |
| Mitsubishi | P1688 | No description available | Powertrain |
| Opel | P1688 | Internal Fuel Inj Pump Ctrller Failure Brand | Powertrain |
| Peugeot | P1688 | No description available | Powertrain |
| Porsche | P1688 | No description available | Powertrain |
| Proton | P1688 | No description available | Powertrain |
| Saab | P1688 | Internal Fuel Inj Pump Ctrller Failure Brand | Powertrain |
| MG (SAIC) | P1688 | EOP Power Supply on Failure *8 Brand | Powertrain |
| Suzuki | P1688 | Exhaust Gas Recirculation 'B' Control Circuit 2 Low Brand | Powertrain |
| Tata | P1688 | Gas Indicator Light Control 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 3
These 7-character codes are manufacturer-specific variants of P1688 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P168800 | ECU- oder Leitungsfehler SSM2-Abschaltpfad Brand | Powertrain |
| Sprinter | P168800 | ECU- oder Leitungsfehler SSM2-Abschaltpfad Brand | Powertrain |
| SsangYong | P168800 | Overvoltage, switch off glow plugs Brand | Powertrain |
6Related codes
Browse Pxxx codes or P168xx codes.