P1903 Audi Code - Engine Coolant Hydraulic Blower Motor Solenoid Short To Positive
Quick Answer
P1903 Audi indicates Engine Coolant Hydraulic Blower Motor Solenoid Short To Positive. Common causes include Faulty Engine Coolant Hydraulic Blower Motor Solenoid, Engine Coolant Hydraulic Blower Motor Solenoid harness is open or shorted, Engine Coolant Hydraulic Blower Motor Solenoid circuit poor electrical connection. 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
- P1903 Audi indicates Engine Coolant Hydraulic Blower Motor Solenoid Short To Positive.
- Common causes
- Common causes include Faulty Engine Coolant Hydraulic Blower Motor Solenoid, Engine Coolant Hydraulic Blower Motor Solenoid harness is open or shorted, Engine Coolant Hydraulic Blower Motor Solenoid circuit poor electrical connection.
- 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.
Code P1903 Audi Description
What are the Possible Causes of the DTC P1903 Audi?
- Faulty Engine Coolant Hydraulic Blower Motor Solenoid
- Engine Coolant Hydraulic Blower Motor Solenoid harness is open or shorted
- Engine Coolant Hydraulic Blower Motor Solenoid circuit poor electrical connection
How to Fix the DTC P1903 Audi?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1903 Audi code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1903 Audi code?
Need more information on how to fix the P1903 Audi code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1903 Audi code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1903 Audi Code
1. What does the OBDII code P1903 mean on an Audi?
P1903 indicates an issue with the Engine Coolant Hydraulic Blower Motor Solenoid, specifically a short to positive in its electrical circuit.
2. What are the common symptoms of a P1903 code in an Audi?
Symptoms can include a check engine light, overheating engine, reduced cooling system performance, or unusual noises from the cooling fan system.
3. What causes the P1903 code to trigger?
The code is typically caused by damaged wiring, a short circuit, a faulty solenoid, or issues with the blower motor itself.
4. Can driving with a P1903 code damage my Audi?
Yes, driving with this code can lead to engine overheating, which may cause severe damage if not resolved promptly.
5. How can I diagnose the cause of a P1903 code?
Start by inspecting the wiring and connectors for damage or corrosion, then test the solenoid and blower motor for proper function using a multimeter.
6. Is a faulty solenoid the only reason for a P1903 code?
No, other potential causes include shorted wires, a blown fuse, or a malfunctioning blower motor.
7. How much does it cost to fix a P1903 code on an Audi?
Repair costs can vary; replacing a solenoid may cost $100–$300, while fixing wiring issues could be less expensive depending on labor rates and severity.
8. Can I fix the P1903 code on my Audi myself?
If you are experienced with electrical diagnostics and repairs, you can attempt to fix it by addressing wiring issues or replacing the solenoid. Otherwise, it’s best to consult a professional mechanic.
9. Will clearing the P1903 code with a scanner fix the issue?
No, clearing the code will only reset the check engine light temporarily. The underlying issue must be resolved to prevent the code from returning.
10. How can I prevent the P1903 code from occurring again?
Regularly inspect and maintain the cooling system, including checking the condition of wiring, connectors, and components like the blower motor and solenoid.
Discuss the causes and fixes for P1903 Audi OBDII Code
Code P1903 Audi 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.
