PowertrainP1644
CautionSeverity: Caution - get it checked when you can
Fault during repetition of stop learning
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 25
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1644 | Generator Inverter. Power Supply. Open Circuit Brand | Powertrain |
| Mercedes-Benz | P1644 | No description available | Powertrain |
| BMW | P1644 | Fault during repetition of stop learning Brand | Powertrain |
| BYD | P1644 | 13 gear failed to back to neutral Brand | Powertrain |
| Chery | P1644 | No description available | Powertrain |
| Daewoo | P1644 | Fuel Pump Speed Ctrl Circ Brand | Powertrain |
| DFFS | P1644 | Accelerator pedal hard point information failure Brand | Powertrain |
| DFXK | P1644 | No description available | Powertrain |
| EOBD | P1644 | Sriomh luas Brand | Powertrain |
| Geely | P1644 | No description available | Powertrain |
| GM | P1644 | Fuel Pump Speed Ctrl Circ Brand | Powertrain |
| Great Wall | P1644 | ECM no valid status Brand | Powertrain |
| Holden | P1644 | Kickdown Switch Circuit High Voltage Brand | Powertrain |
| Honda | P1644 | No description available | Powertrain |
| Land Rover | P1644 | Fuel pump speed control circuit Brand | Powertrain |
| Mahindra | P1644 | No description available | Powertrain |
| Opel | P1644 | Fuel Pump Speed Ctrl Circ Brand | Powertrain |
| Peugeot | P1644 | No description available | Powertrain |
| Porsche | P1644 | Steuergerät defekt Lambdasonden-IC 4 Brand | Powertrain |
| Proton | P1644 | No description available | Powertrain |
| Saab | P1644 | Fuel Pump Speed Ctrl Circ Brand | Powertrain |
| Sprinter | P1644 | No description available | Powertrain |
| Suzuki | P1644 | Immobilizer ID Mismatched Brand | Powertrain |
| Tata | P1644 | Shut Off Valve Pressure Regulator Short To Ground Brand | Powertrain |
| Toyota | P1644 | No description available | 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 21
These 7-character codes are manufacturer-specific variants of P1644 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P164400 | Fault check of variant coding for plausiblity fault Brand | Powertrain |
| Sprinter | P164400 | No description available | Powertrain |
| SsangYong | P164400 | TCU not coded(invalid variant coding) Brand | Powertrain |
| Mercedes-Benz | P164401 | Eine fasche Variantenkodierung oder Konifguration wurde erkannt Brand | Powertrain |
| Mercedes-Benz | P164404 | An incorrect variant coding or configuration was detected. There is an internal fault. Brand | Powertrain |
| Mercedes-Benz | P164405 | An incorrect variant coding or configuration was detected. There is a programming fault. Brand | Powertrain |
| Mercedes-Benz | P164408 | An incorrect variant coding or configuration was detected. There is a signal fault or the message is faulty. Brand | Powertrain |
| Mercedes-Benz | P164409 | An incorrect variant coding or configuration was detected. There is a component fault. Brand | Powertrain |
| Mercedes-Benz | P164429 | Eine falsche Variantencodierung oder Konfiguration wurde erkannt. Es liegt ein ungültiges Signal vor. Brand | Powertrain |
| Mercedes-Benz | P164451 | An incorrect variant coding or configuration was detected. The component is not programmed. Brand | Powertrain |
| Mercedes-Benz | P164452 | Default variant coding was detected Brand | Powertrain |
| Mercedes-Benz | P164453 | An incorrect variant coding or configuration was detected. The component is deactivated. Brand | Powertrain |
| Mercedes-Benz | P164455 | An incorrect variant coding or configuration was detected. Not Configured Brand | Powertrain |
| Mercedes-Benz | P164456 | Invalid variant coding was detected Brand | Powertrain |
| Mercedes-Benz | P164457 | An incorrect variant coding or configuration was detected. Incorrect or incompatible software modules were detected. Brand | Powertrain |
| Mercedes-Benz | P164481 | An incorrect variant coding or configuration was detected. Incorrect data were received. Brand | Powertrain |
| Mercedes-Benz | P164491 | An incorrect variant coding or configuration was detected. Parametric Brand | Powertrain |
| Mercedes-Benz | P1644E2 | An incorrect variant coding or configuration was detected. Counter byte when corresponding SAE Code is used more than one time Brand | Powertrain |
| Mercedes-Benz | P1644FA | An incorrect variant coding or configuration was detected. Brand | Powertrain |
| Mercedes-Benz | P1644FB | An incorrect variant coding or configuration was detected. Brand | Powertrain |
| Mercedes-Benz | P1644FC | An incorrect variant coding or configuration was detected. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P164xx codes.