PowertrainP1612
CautionSeverity: Caution - get it checked when you can
Immobilizer no or wrong signal
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 39
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1612 | Lambda/O2 Sensor Heater (Bank 1, Sensor 2) Brand | Powertrain |
| BAIC Motor | P1612 | IMM_No Response Brand | Powertrain |
| Mercedes-Benz | P1612 | No description available | Powertrain |
| BMW | P1612 | no signal from instrument cluster Brand | Powertrain |
| BYD | P1612 | Slop sensor fault Brand | Powertrain |
| Chery | P1612 | Challenge Request Failed Brand | Powertrain |
| Chrysler | P1612 | No description available | Powertrain |
| Daewoo | P1612 | NATS Malfunction Brand | Powertrain |
| Daihatsu | P1612 | Internal IC system 2 Brand | Powertrain |
| DFFS | P1612 | Challenge request failed Brand | Powertrain |
| DFFX | P1612 | Challenge request failed Brand | Powertrain |
| DFXK | P1612 | Challenge Request Failed Brand | Powertrain |
| EOBD | P1612 | Juhtseade Brand | Powertrain |
| Geely | P1612 | Challenge Request Failed Brand | Powertrain |
| GM | P1612 | NATS Malfunction Brand | Powertrain |
| Great Wall | P1612 | Challenge request failed Brand | Powertrain |
| Hafei | P1612 | Challenge request failed Brand | Powertrain |
| Holden | P1612 | Immobilizer No Signal Brand | Powertrain |
| Hyundai | P1612 | No description available | Powertrain |
| Isuzu | P1612 | No description available | Powertrain |
| Land Rover | P1612 | No description available | Powertrain |
| Mahindra | P1612 | No description available | Powertrain |
| Mitsubishi | P1612 | EEPROM fail Brand | Powertrain |
| Nissan | P1612 | No description available | Powertrain |
| Opel | P1612 | NATS Malfunction Brand | Powertrain |
| Perodua | P1612 | Internal IC system 2 Brand | Powertrain |
| Peugeot | P1612 | No description available | Powertrain |
| Porsche | P1612 | No description available | Powertrain |
| Proton | P1612 | EEPROM fail Brand | Powertrain |
| Saab | P1612 | NATS Malfunction Brand | Powertrain |
| MG (SAIC) | P1612 | Challenge request failed Brand | Powertrain |
| Smart | P1612 | No description available | Powertrain |
| Sprinter | P1612 | ENV_ _Datum4 Brand | Powertrain |
| Subaru | P1612 | No description available | Powertrain |
| Suzuki | P1612 | No Signal from Immobilizer Control Module Brand | Powertrain |
| SWM Motor | P1612 | PEPS no response Brand | Powertrain |
| Tata | P1612 | Cylinder 1-4 Injector HSD Brand | Powertrain |
| Toyota | P1612 | Immobilizer no or wrong signal Brand | Powertrain |
| Volkswagen | P1612 | Engine control module incorrectly coded; Defective 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 6
These 7-character codes are manufacturer-specific variants of P1612 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P161200 | Sensor Ansaugluftdruck elektrischer Fehler Signalpegel High Brand | Powertrain |
| Sprinter | P161200 | Sensor Ansaugluftdruck elektrischer Fehler Signalpegel High Brand | Powertrain |
| SsangYong | P161200 | Injector bank #1 malfunction - high voltage Brand | Powertrain |
| Volkswagen | P161200 | No description available | Powertrain |
| SsangYong | P161201 | CAN communication malfunction: GWM EEM Brand | Powertrain |
| SsangYong | P161287 | CAN: TCU message not received (time out) Brand | Powertrain |
6Related codes
Browse Pxxx codes or P161xx codes.