P1928 Code - Fuel Additive Level Pump Control Circuit/Open
Quick Answer
The diagnostic trouble code P1928 indicates a problem with the Fuel Additive Level Pump Control Circuit being open. Common causes include Faulty fuel additive level sensor, Corrosion or damage to the wiring harness, Malfunctioning fuel additive pump. 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
- P1928 indicates Fuel Additive Level Pump Control Circuit/Open.
- Common causes
- Common causes include Faulty fuel additive level sensor, Corrosion or damage to the wiring harness, Malfunctioning fuel additive pump.
- 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.
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Code P1928 Description
The diagnostic trouble code P1928 indicates a problem with the Fuel Additive Level Pump Control Circuit being open. This code is usually found in vehicles equipped with a diesel engine and an additive tank used to inject a urea-based solution into the exhaust system to reduce emissions. The Fuel Additive Level Pump Control Circuit is responsible for monitoring the level of the additive in the tank and controlling the pump that delivers it to the exhaust system. When this circuit is open, it means that there is a break in the electrical connection, preventing the pump from functioning properly.
Common Causes of P1928
- Faulty fuel additive level sensor.
- Corrosion or damage to the wiring harness.
- Malfunctioning fuel additive pump.
- Low urea-based additive level in the tank.
- Electronic control module (ECM) failure.
Symptoms of P1928
- Check engine light illuminated on the dashboard.
- Reduced engine power or performance.
- Difficulty starting the engine.
- Poor fuel efficiency.
- Failed emissions test.
How to Fix P1928
- Begin by checking the level of the urea-based additive in the tank to ensure it is not depleted.
- Inspect the wiring harness connected to the fuel additive level sensor for any signs of damage or corrosion.
- Test the fuel additive pump to determine if it is functioning properly. Replace if necessary.
- Scan the vehicle's ECM for any fault codes and reset them after completing the repair.
- Clear the diagnostic trouble code and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1928
The cost of repairing a Fuel Additive Level Pump Control Circuit/Open issue can vary depending on the specific cause of the problem. On average, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $300. This estimate does not include diagnostic fees, taxes, or any additional repairs that may be needed. It is recommended to consult with a professional mechanic for a more accurate cost estimate based on the vehicle's make and model.
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Code P1928 Information for Specific Makes
- P1928 Ford — Fuel Additive Level Pump Control Circuit/Open
- P1928 Lincoln — Fuel Additive Level Pump Control Circuit/Open
- P1928 Mazda — Fuel Additive Level Pump Control Circuit/Open
- P1928 Mercury — Fuel Additive Level Pump Control Circuit/Open
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