P1905 Audi Code - Charge Air Coolant Pump Relay Short To Positive
Quick Answer
P1905 Audi indicates Charge Air Coolant Pump Relay Short To Positive. Common causes include Faulty Charge Air Coolant Pump Relay, Charge Air Coolant Pump Relay harness is open or shorted, Charge Air Coolant Pump Relay 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
- P1905 Audi indicates Charge Air Coolant Pump Relay Short To Positive.
- Common causes
- Common causes include Faulty Charge Air Coolant Pump Relay, Charge Air Coolant Pump Relay harness is open or shorted, Charge Air Coolant Pump Relay 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 P1905 Audi Description
What are the Possible Causes of the DTC P1905 Audi?
- Faulty Charge Air Coolant Pump Relay
- Charge Air Coolant Pump Relay harness is open or shorted
- Charge Air Coolant Pump Relay circuit poor electrical connection
How to Fix the DTC P1905 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 P1905 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.
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Frequently Asked Questions about P1905 Audi Code
1. What does the OBDII code P1905 mean on an Audi?
P1905 indicates a problem with the charge air coolant pump relay, specifically a short to positive in the circuit.
2. What are the common symptoms of code P1905 in an Audi?
Symptoms include reduced engine performance, possible overheating of the charge air system, and the illumination of the check engine light.
3. What causes the P1905 code to appear?
This code is usually caused by a short circuit in the charge air coolant pump relay, damaged wiring, or a malfunctioning relay.
4. Can I drive my Audi with a P1905 code?
Driving with a P1905 code is not recommended, as it can lead to reduced performance and potential damage to the engine or turbocharger system.
5. How do I diagnose the P1905 code on my Audi?
Diagnose the issue by inspecting the charge air coolant pump relay, checking for damaged or shorted wiring, and testing the relay for proper operation.
6. How do I fix the P1905 code on my Audi?
Repair or replace any damaged wiring, replace the faulty relay, and clear the code with a diagnostic scanner to ensure the issue is resolved.
7. What tools are needed to troubleshoot the P1905 code?
You’ll need a multimeter to test the relay and wiring, a diagnostic scanner to read and clear codes, and basic tools for accessing the relay and wiring.
8. How much does it cost to fix the P1905 code?
Repairs can range from $50 to $200, depending on whether the issue is wiring-related or requires a new charge air coolant pump relay.
9. Can a faulty charge air coolant pump cause the P1905 code?
While the code specifically relates to the relay, a faulty charge air coolant pump could contribute to the issue and should be inspected.
10. Will replacing the relay always fix the P1905 code?
Not necessarily. If the wiring leading to the relay is damaged or shorted, replacing the relay alone won’t resolve the issue. Always inspect the entire circuit.
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