P1906 Audi Code - Charge Air Coolant Pump Relay Open Circuit/Short To Ground
Quick Answer
P1906 Audi indicates Charge Air Coolant Pump Relay Open Circuit/Short To Ground. 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
- P1906 Audi indicates Charge Air Coolant Pump Relay Open Circuit/Short To Ground.
- 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 P1906 Audi Description
What are the Possible Causes of the DTC P1906 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 P1906 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 P1906 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 P1906 Audi Code
1. What does the OBDII code P1906 mean on an Audi?
P1906 indicates an issue with the charge air coolant pump relay, specifically an open circuit or a short to ground in the electrical system.
2. What are the common symptoms of a P1906 code?
Symptoms include reduced engine performance, overheating of the charge air system, illuminated check engine light, or possible limp mode activation.
3. What causes the P1906 code to appear?
Common causes include a faulty coolant pump relay, damaged wiring or connectors, a failed charge air coolant pump, or corrosion in the electrical system.
4. Can I drive my Audi with a P1906 code?
It is not recommended to drive your Audi for extended periods with this code, as it may lead to overheating of the charge air system and reduced engine performance.
5. How do I diagnose a P1906 code?
Start by inspecting the charge air coolant pump relay, wiring, and connectors for damage or corrosion. Use a multimeter to test for continuity and voltage at the relay and pump.
6. How can I fix the P1906 code on my Audi?
Repairs may involve replacing a faulty relay, repairing damaged wiring, cleaning corroded connectors, or replacing the charge air coolant pump if it's defective.
7. What tools are needed to troubleshoot a P1906 code?
You’ll need an OBDII scanner, a multimeter, and basic tools to access and inspect the relay, wiring, and pump.
8. How much does it cost to fix a P1906 code?
Repair costs vary, but replacing a relay typically costs $50-$150, while replacing a coolant pump can range from $300 to $700, including labor.
9. Can a P1906 code damage my engine?
If left unresolved, the charge air system may overheat, potentially causing engine damage or reduced efficiency over time.
10. Does the P1906 code require professional repair?
While basic troubleshooting can be done at home, professional diagnosis is recommended if you’re unfamiliar with electrical systems or the issue persists.
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