PowertrainP0635
SeriousSeverity: Serious - have it checked soon
Power Steering Control Circuit
Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
Safety: This code relates to the steering system. Power steering assistance may be reduced or fail.
1What it means in plain English
The engine computer or one of its output circuits has a fault.
2Common causes
- Engine control module fault
- Power or ground connection problem
- Low battery or charging voltage
- Wiring short or open circuit
- Software or memory fault
3Can I drive?
Serious · drive with care
If the engine runs normally, drive carefully to a workshop for diagnosis. If it runs badly, stalls, or will not restart, have the car towed.
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 27
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0635 | Power Steering Control Circuit SAE | Powertrain |
| BAIC Motor | P0635 | Power Steering Control Circuit Brand | Powertrain |
| BMW | P0635 | Power Steering Control Circuit Brand | Powertrain |
| BYD | P0635 | Power Steering Control Circuit Brand | Powertrain |
| Chery | P0635 | Power Steering Control Circuit Brand | Powertrain |
| Daewoo | P0635 | Power Steering Control Circuit Brand | Powertrain |
| DFFS | P0635 | Power Steering Control Circuit Brand | Powertrain |
| DFFX | P0635 | Power Steering Control Circuit Brand | Powertrain |
| DFXK | P0635 | Power Steering Control Circuit Brand | Powertrain |
| EOBD | P0635 | Servolenkungsregelkreis Brand | Powertrain |
| Geely | P0635 | Power Steering Control Circuit Brand | Powertrain |
| GM | P0635 | Power Steering Control Circuit Brand | Powertrain |
| Great Wall | P0635 | Power Steering Control Circuit Brand | Powertrain |
| Hafei | P0635 | Power Steering Control Circuit Brand | Powertrain |
| Holden | P0635 | Power Steering Pressure Switch Performance Brand | Powertrain |
| Hyundai | P0635 | Power Steering Control Circuit SAE | Powertrain |
| Isuzu | P0635 | Power Steering Control Circuit SAE | Powertrain |
| Land Rover | P0635 | Power steering control circuit Brand | Powertrain |
| Mitsubishi | P0635 | Power Steering Control Circuit SAE | Powertrain |
| Opel | P0635 | Power Steering Control Circuit Brand | Powertrain |
| Peugeot | P0635 | Power Steering Control Circuit SAE | Powertrain |
| Proton | P0635 | Power Steering Control Circuit SAE | Powertrain |
| Saab | P0635 | Power Steering Control Circuit Brand | Powertrain |
| MG (SAIC) | P0635 | Power Steering Control Circuit Brand | Powertrain |
| Tata | P0635 | Power Steering Control Circuit Brand | Powertrain |
| Toyota | P0635 | ECU internal fault (left front pretensioner trigger system) Brand | Powertrain |
| Volkswagen | P0635 | SAE: Power Steering Control Circuit 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 31
These 7-character codes are manufacturer-specific variants of P0635 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P063501 | The electric power steering has a malfunction. - FailOp Mode Brand | Powertrain |
| Mercedes-Benz | P063504 | The electric power steering has a malfunction. There is an internal fault. Brand | Powertrain |
| Mercedes-Benz | P063506 | The electric power steering has a malfunction. There is an algorithm fault. Brand | Powertrain |
| Mercedes-Benz | P063507 | The electric power steering has a malfunction. Mechanical Failure Brand | Powertrain |
| Mercedes-Benz | P063509 | The electric power steering has a malfunction. - Component Failure Brand | Powertrain |
| Mercedes-Benz | P063513 | The electric power steering has a malfunction. There is an open circuit. Brand | Powertrain |
| Mercedes-Benz | P063516 | The electric power steering has a malfunction. Brand | Powertrain |
| Mercedes-Benz | P063517 | The electric power steering has a malfunction. Brand | Powertrain |
| Mercedes-Benz | P063519 | The electric power steering has a malfunction. Circuit Current Above Threshold Brand | Powertrain |
| Mercedes-Benz | P06351D | The electric power steering has a malfunction. The current value is outside the permissible range. Brand | Powertrain |
| Mercedes-Benz | P063525 | The electric power steering has a malfunction - Functional Restriction Brand | Powertrain |
| Mercedes-Benz | P063529 | The electric power steering has a malfunction. There is an invalid signal. Brand | Powertrain |
| Mercedes-Benz | P063531 | The electric power steering has a malfunction. No signal Brand | Powertrain |
| Mercedes-Benz | P063544 | The electric power steering has a malfunction. Data Memory Failure Brand | Powertrain |
| Mercedes-Benz | P063545 | The integrity of the FLASH memory cannot be guarenteed. Brand | Powertrain |
| Mercedes-Benz | P063546 | The ROM integrity cannot be guaranteed. Brand | Powertrain |
| Mercedes-Benz | P063547 | The electric power steering has a malfunction. There is a runtime error. Brand | Powertrain |
| Mercedes-Benz | P063548 | The electric power steering has a malfunction. There is an error in the control memory. Brand | Powertrain |
| Mercedes-Benz | P06354B | The electric power steering has a malfunction. There is a fault due to overtemperature. Brand | Powertrain |
| Mercedes-Benz | P063551 | The electric power steering has a malfunction. The component is not programmed. Brand | Powertrain |
| Mercedes-Benz | P063553 | The electric power steering has a malfunction. The component is deactivated. Brand | Powertrain |
| Mercedes-Benz | P063554 | The electric power steering has a malfunction. Calibration is missing. Brand | Powertrain |
| Mercedes-Benz | P063557 | The electric power steering has a malfunction. Incorrect or incompatible software modules were detected. Brand | Powertrain |
| Mercedes-Benz | P063571 | The electric power steering has a malfunction. The actuator is blocked. Brand | Powertrain |
| Mercedes-Benz | P063577 | The electric power steering has a malfunction. The commanded position cannot be reached. Brand | Powertrain |
| Mercedes-Benz | P063584 | The system has transitioned to a CRAWL operational state due to lane capability. Brand | Powertrain |
| Mercedes-Benz | P063591 | At least two CFG pins are faulty and cannot be used for determining the Lane ID Brand | Powertrain |
| Mercedes-Benz | P063596 | The electric power steering has a malfunction. Brand | Powertrain |
| Mercedes-Benz | P063597 | Die Elektrische Servolenkung hat Funktionsstörung. Die Systemfunktion ist eingeschrnkt. Brand | Powertrain |
| Mercedes-Benz | P063598 | The electric power steering has a malfunction. The component or the system has overtemperature. Brand | Powertrain |
| Mercedes-Benz | P0635FF | Event is raised by lane 1 if second lanes application is not started Brand | Powertrain |
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