P1905 Volkswagen Code - Charge Air Coolant Pump Relay Short To Positive
Quick Answer
P1905 Volkswagen 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 Volkswagen 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 Volkswagen Description
What are the Possible Causes of the DTC P1905 Volkswagen?
- 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 Volkswagen?
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 Volkswagen 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 Volkswagen Code
1. What does the OBDII code P1905 mean on a Volkswagen?
P1905 indicates a "Charge Air Coolant Pump Relay Short To Positive," meaning there’s an electrical issue with the relay or circuit controlling the charge air coolant pump.
2. What are the common symptoms of P1905 in a Volkswagen?
Symptoms include engine overheating, reduced engine performance, possible limp mode, and the Check Engine Light turning on.
3. What causes the P1905 code to appear?
Common causes include a faulty charge air coolant pump relay, damaged wiring or connectors, or a short circuit to the positive voltage.
4. How can I diagnose the P1905 code on my Volkswagen?
Start by checking the charge air coolant pump relay and its wiring for damage, test the relay with a multimeter, and inspect for short circuits or corrosion.
5. Can I drive my Volkswagen with a P1905 code?
Driving with this code is not recommended, as it may lead to engine overheating or reduced engine performance, potentially causing further damage.
6. How do I fix the P1905 code in a Volkswagen?
Repairs may include replacing the charge air coolant pump relay, repairing damaged wiring, or cleaning corroded electrical connectors.
7. How much does it cost to repair a P1905 code on a Volkswagen?
Repair costs can vary but typically range from $100 to $300, depending on whether the issue is with the relay, wiring, or other components.
8. Can a faulty charge air coolant pump cause a P1905 code?
While the code specifically refers to the relay, a malfunctioning charge air coolant pump could indirectly contribute to the issue and should also be inspected.
9. Will clearing the P1905 code fix the problem?
Clearing the code without addressing the underlying issue will not fix the problem; the code will likely return if the fault remains.
10. What tools are needed to troubleshoot the P1905 code?
Tools include an OBDII scanner, a multimeter for testing electrical circuits, and basic hand tools for inspecting and repairing wiring or connectors.
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