Volvo Engine Control Unit ECU P30743102 | Denso 079700-9133 Genuine OEM
Volvo Engine Control Unit ECU P30743102 / Denso 079700-9133 Genuine OEM
The Volvo Engine Control Unit (ECU) P30743102, manufactured by Denso under part number 079700-9133, is a genuine OEM engine management computer designed for selected Volvo S40 II and Volvo V50 models equipped with the 2.4L five-cylinder petrol engine.
The ECU is the vehicle's primary engine management module, controlling fuel injection, ignition timing, air-fuel mixture, throttle response, emissions systems, and communication with numerous engine sensors. A properly functioning ECU ensures smooth engine performance, efficient fuel consumption, and dependable vehicle operation.
This genuine Denso ECU is commonly found in Volvo vehicles fitted with the 2.4L B5244S4/B5244S5 petrol engine produced during the mid-2000s.
Product Specifications
| Specification | Details |
|---|---|
| Volvo Part Number | P30743102 |
| Denso Number | 079700-9133 |
| Manufacturer | Denso |
| Vehicle Manufacturer | Volvo |
| Module Type | Engine Control Unit (ECU/ECM) |
| Engine | 2.4L Inline 5 Petrol |
| Engine Codes | B5244S4 / B5244S5* |
| Condition | Genuine OEM Used Unit |
| Testing Status | Fully Tested |
| Warranty | 30 Days |
| Shipping | Worldwide Available |
*Engine code may vary depending on vehicle specification.
Compatibility Table
| Make | Model | Engine | Transmission | Year Range |
|---|---|---|---|---|
| Volvo | S40 II (544) | 2.4L Petrol (B5244S4/B5244S5) | Manual / Automatic* | 2004–2007 |
| Volvo | V50 (545) | 2.4L Petrol (B5244S4/B5244S5) | Manual / Automatic* | 2004–2007 |
*Compatibility depends on VIN, engine code, transmission type, emissions specification, software version, and market. Always verify both part numbers P30743102 and 079700-9133 before ordering. These part numbers are consistently associated with Volvo S40 II and V50 2.4L petrol models.
What Does the Engine Control Unit Do?
The ECU continuously monitors and controls essential engine functions, including:
- Fuel injection timing
- Ignition timing
- Air-fuel ratio calculations
- Electronic throttle control
- Idle speed regulation
- Variable engine management
- Emissions control
- Oxygen sensor monitoring
- Engine diagnostics
- Communication with other vehicle modules
A healthy ECU is critical for maintaining optimum engine performance, emissions compliance, and fuel efficiency.
Common Symptoms of a Faulty ECU
A defective ECU may result in:
- Check Engine Light illuminated
- Engine cranks but fails to start
- Rough idle or stalling
- Poor acceleration
- Engine misfires
- Increased fuel consumption
- Loss of power
- No communication with diagnostic equipment
- Intermittent starting issues
- Immobilizer-related faults
Many Volvo owners report that a failed ECU can cause complete communication loss with diagnostic scanners, making accurate replacement with the correct OEM part number essential.
Why Buy from Automan Spare Parts?
Automan Spare Parts is a trusted supplier of genuine OEM automotive electronics for European, Japanese, and Korean vehicles.
Benefits of Buying From Us
- Genuine OEM Volvo Parts
- Fully Tested Before Dispatch
- Worldwide Shipping Available
- Competitive Prices
- Secure Protective Packaging
- Fast Order Processing
- Expert Compatibility Assistance
- 30-Day Warranty
Our inventory includes thousands of genuine automotive electronic modules, including ECUs, TCMs, BCMs, ABS modules, climate control units, navigation systems, hybrid controllers, and body control modules.
Installation Information
Before installation, please note:
- Immobilizer synchronization may be required.
- ECU programming or cloning may be necessary.
- VIN matching may be required.
- Professional installation is recommended.
- Always verify the original part numbers before replacement.
For many Volvo applications, replacing the ECU may require software transfer, immobilizer matching, or cloning to ensure proper vehicle operation.
Order Volvo ECU P30743102 Today
Restore your Volvo's performance with a Genuine OEM Engine Control Unit P30743102 / Denso 079700-9133 from Automan Spare Parts.
If you're unsure about compatibility, simply send us your VIN number or clear photos of your existing ECU label, and our technical team will verify the correct part before you place your order.
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