P0258 Code - Injection Pump Fuel Metering Control 'B' Low
Quick Answer
The diagnostic trouble code P0258 indicates that there is a low signal coming from the fuel metering control 'B' located in the injection pump. Common causes include Faulty fuel metering control 'B', Wiring or electrical issues, Clogged fuel injectors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0258 indicates Injection Pump Fuel Metering Control 'B' Low.
- Common causes
- Common causes include Faulty fuel metering control 'B', Wiring or electrical issues, Clogged fuel injectors.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0258 Description
The diagnostic trouble code P0258 indicates that there is a low signal coming from the fuel metering control 'B' located in the injection pump. This can lead to inadequate fuel being delivered to the engine, resulting in poor performance, reduced fuel efficiency, and potential engine misfires. The fuel metering control 'B' is responsible for regulating the amount of fuel that is injected into the engine cylinders during combustion. When this control is not functioning properly, it can lead to a lean fuel mixture, causing the engine to run rough and potentially causing damage over time.
Common Causes of P0258
- Faulty fuel metering control 'B'
- Wiring or electrical issues
- Clogged fuel injectors
- Low fuel pressure
- Fuel pump failure
Symptoms of P0258
- Reduced engine power
- Engine misfires or rough idling
- Poor fuel efficiency
- Difficulty starting the engine
- Check Engine Light illuminated
How to Fix P0258
- Diagnose the issue with a diagnostic scan tool to confirm the P0258 code and pinpoint the exact cause.
- Inspect the fuel metering control 'B' for any signs of damage or malfunction and replace if necessary.
- Check the wiring and connectors for any corrosion or damage, repairing or replacing as needed.
- Test the fuel injectors and fuel pressure to ensure proper operation and make any repairs or replacements as necessary.
- Clear the trouble code and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P0258
The cost of repairing the injection pump fuel metering control 'B' low issue can vary depending on the specific cause of the problem and the cost of parts and labor. On average, the repair costs for this issue can range from $200 to $500. However, it is important to note that labor rates at auto repair shops can vary and additional diagnostic time may be needed to pinpoint the exact cause of the problem. It is recommended to consult with a qualified mechanic or technician for a more accurate cost estimate based on your vehicle's make and model.
Need more information about the P0258 code?
Need more information on how to fix the P0258 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0258 code diagnosed by a professional: Find a repair shop in your area
Code P0258 Information for Specific Makes
- P0258 Mercedes-Benz — Injection Pump Fuel Metering Control 'B' Low
Frequently Asked Questions about P0258 Code
No Frequently Asked Questions about P0258 Code found.
Discuss the causes and fixes for P0258 OBDII Code
Code P0258 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.