P2435 Buick Code - Secondary Air Injection System Pressure Sensor Circuit Bank 2
Quick Answer
The secondary air injection system aids in the reduction of hydrocarbon emissions during a cold start. Common causes include Faulty Secondary Air Injection Pump Relay, Faulty Secondary Air Injection Pump, Secondary Air Injection Pump harness is open or shorted. 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
- P2435 Buick indicates Secondary Air Injection System Pressure Sensor Circuit Bank 2.
- Common causes
- Common causes include Faulty Secondary Air Injection Pump Relay, Faulty Secondary Air Injection Pump, Secondary Air Injection Pump harness is open or shorted.
- 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 P2435 Buick Description
Ignition voltage is supplied to the secondary air injection pump and air injection shutoff/check valve relays. The ECM controls the relays by grounding the control circuits, which activates the relays. When the relay contacts close, voltage is supplied to the pump and the valves, which turns the pump on and opens the valves.
The Diagnostic Trouble Code (DTC) will set when the ECM determines that the pressure sensor value change at either shutoff/check valve and the signal variation are not to factory specification when the air injection pump is commanded ON.
What are the Possible Causes of the DTC P2435 Buick?
- Faulty Secondary Air Injection Pump Relay
- Faulty Secondary Air Injection Pump
- Secondary Air Injection Pump harness is open or shorted
- Secondary Air Injection Pump circuit poor electrical connection
How to Fix the DTC P2435 Buick?
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 P2435 Buick 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 P2435 Buick code?
Need more information on how to fix the P2435 Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2435 Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2435 Buick Code
What does the OBDII code P2435 mean in a Buick?
P2435 indicates an issue with the Secondary Air Injection System Pressure Sensor Circuit on Bank 2, typically caused by incorrect pressure readings or sensor malfunction.
What are the symptoms of code P2435 in a Buick?
Common symptoms include an illuminated check engine light, increased emissions, potential rough engine performance during startup, and failed emissions tests.
What causes the P2435 code in a Buick?
Causes may include a faulty pressure sensor, damaged wiring or connectors in the air injection system, clogged air injection passages, or a malfunctioning air pump.
Can driving with code P2435 damage my Buick?
While the vehicle may remain drivable, prolonged issues with the air injection system can lead to increased emissions and potential damage to the catalytic converter.
How do I diagnose P2435 in a Buick?
Diagnosis typically involves checking the pressure sensor, inspecting wiring and connectors for damage, testing the air pump, and verifying proper airflow in the injection system.
How can I fix code P2435 in a Buick?
Repairs may include replacing the faulty pressure sensor, repairing damaged wiring, cleaning clogged air passages, or replacing the secondary air pump if necessary.
What does "Bank 2" refer to in code P2435?
Bank 2 refers to the side of the engine opposite Bank 1, typically the side that does not contain cylinder #1 in a V6 or V8 engine.
How much does it cost to repair P2435 in a Buick?
Repair costs vary depending on the issue but can range from $100 for sensor replacement to $500 or more for air pump replacement.
Can I clear the P2435 code without fixing the issue?
Clearing the code without addressing the root cause may temporarily turn off the check engine light, but the code will likely return as the problem persists.
Is P2435 a common code for Buicks?
While not the most common, P2435 can occur in Buicks equipped with a secondary air injection system, especially if the vehicle has high mileage or poor maintenance.
Discuss the causes and fixes for P2435 Buick OBDII Code
Code P2435 Buick 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.
