Error code P0248 is displayed and the check engine light is on - what does this mean?
The OBD/EOBD system has detected a fault in the turbocharger wastegate solenoid A. This DTC P0248 indicates problems with the electronic boost pressure control, which is responsible for optimum performance in turbocharged engines. Depending on the manufacturer, related components of the turbocharger system may also be affected.
What causes can this error code have?
- Defective turbocharger wastegate solenoid
- Damaged vacuum lines to the wastegate
- Electrical defect in the solenoid circuit
- Corroded or loose plug connections
- Defective wastegate diaphragm
- Blocked vacuum lines
- Faulty engine control unit (ECU)
- Mechanical blockage of the wastegate valve
What symptoms occur in parallel with fault code P0248?
- Loss of power: The engine develops significantly less power, especially at higher engine speeds.
- Irregular boost pressure: Fluctuating engine performance and jerky running under load.
- Black smoke: Increased soot formation in the exhaust gas due to unoptimized combustion.
- Whistling or hissing: Unusual noises from the engine compartment due to loss of pressure.
- Increased fuel consumption: The engine requires more fuel for the same performance.
How can the problem of error code P0248 be rectified?
- The repair requires a systematic diagnosis of the turbocharger components in order to identify the exact cause.
- Replace the wastegate solenoid: Replace the defective solenoid valve with a new original part and check electrical connections
- Replace vacuum lines: Check all hoses to the wastegate for cracks, blockages or ageing and replace completely if necessary
- Repair electrical connections: Clean plug connections, repair broken cables and check ground connections
- Replace wastegate diaphragm: In the event of mechanical defects, have the complete wastegate unit replaced
- Carry out turbocharger service: Professional cleaning and calibration of the entire turbocharger system
- Update the engine control unit: Carry out a software update or reset the ECU according to the manufacturer's specifications
FAQ - Frequently asked questions about DTC P0248
Can I continue driving with error code P0248?
Short distances are possible, but fault code P0248 can lead to engine damage. The turbocharger is not working optimally, which can cause overheating or mechanical defects. A prompt repair is strongly recommended.
How much does it cost to repair fault code P0248?
The costs vary depending on the cause: a wastegate solenoid costs 150-300 euros, vacuum lines 50-100 euros. Major turbocharger repairs can cost 800-2000 euros. Diagnosis costs an additional 100-150 euros.
How do I recognize a defective wastegate solenoid with code P0248?
Typical signs are fluctuating boost pressure, loss of power when accelerating and unusual noises. An OBD scanner can be used to read out the live data from the turbocharger and test the solenoid specifically.
Can I replace the wastegate solenoid on P0248 myself?
If you have the relevant experience, it is possible to replace the solenoid, but requires special tools and knowledge of turbocharger technology. Incorrect installation can cause expensive consequential damage. A specialist workshop is usually the safer choice.
How long does it take to repair error code P0248?
Depending on the cause, 2-6 hours: Solenoid replacement about 2-3 hours, vacuum lines 1-2 hours. For more complex turbocharger problems, the repair can take a whole working day.
Does the EOBD code P0248 also occur with other manufacturers?
Yes, P0248 is a standardized trouble code that has the same meaning for all manufacturers. However, the specific repair procedures and component numbers may vary.