P1420 BMW Code - Secondary Air Valve Control Circuit Electrical
Quick Answer
P1420 BMW indicates Secondary Air Valve Control Circuit Electrical. Common causes for P1420 BMW include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues. 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
- P1420 BMW indicates Secondary Air Valve Control Circuit Electrical.
- Common causes
- Common causes for P1420 BMW include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues.
- 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 P1420 BMW Description
How to Fix the DTC P1420 BMW?
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 P1420 BMW 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 P1420 BMW Code
1. What does the OBDII code P1420 mean on a BMW?
The P1420 code indicates an issue with the Secondary Air Valve Control Circuit, specifically an electrical fault.
2. What are the symptoms of a P1420 code on a BMW?
Common symptoms include an illuminated check engine light, failed emissions tests, and potentially reduced engine performance.
3. What causes the P1420 code on a BMW?
Possible causes include a faulty secondary air valve, damaged wiring or connectors, a failed relay, or a malfunctioning secondary air pump.
4. Can a P1420 code cause drivability issues?
While it might not directly affect drivability, it can lead to increased emissions and may trigger limp mode in some cases.
5. How is the P1420 code diagnosed on a BMW?
Diagnosis involves checking the secondary air valve, testing the control circuit for proper voltage, and inspecting wiring and connectors for damage.
6. Can I drive my BMW with a P1420 code?
You can drive with this code temporarily, but it’s best to address it promptly to avoid potential emissions system damage.
7. How do you fix a P1420 code on a BMW?
Repairs may include replacing the secondary air valve, repairing damaged wiring, replacing a faulty relay, or fixing the secondary air pump.
8. How much does it cost to fix the P1420 code on a BMW?
Repair costs vary but can range from $100 for a simple wiring fix to $500 or more if the secondary air valve or pump needs replacement.
9. Will clearing the P1420 code without repairs solve the issue?
No, clearing the code will temporarily remove the check engine light, but the issue will likely return until the underlying fault is fixed.
10. Can a clogged secondary air pump cause the P1420 code?
Yes, a clogged or malfunctioning secondary air pump can cause the P1420 code by failing to properly regulate airflow.
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