P2436 GMC Code - Secondary Air Injection System Pressure Sensor Performance 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
- P2436 GMC indicates Secondary Air Injection System Pressure Sensor Performance 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 P2436 GMC 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 P2436 GMC?
- 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 P2436 GMC?
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 P2436 GMC 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 P2436 GMC code?
Need more information on how to fix the P2436 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2436 GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2436 GMC Code
1. What are the common symptoms of OBDII code P2436 in a GMC related to the Secondary Air Injection System Pressure Sensor?
- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and the illumination of the Check Engine Light.
2. What are the possible causes of OBDII code P2436 in a GMC indicating an issue with the Secondary Air Injection System Pressure Sensor?
- The code can be triggered by a faulty secondary air injection pump, a malfunctioning pressure sensor, damaged wiring or connectors, or a clogged air injection system.
3. How can I diagnose the cause of OBDII code P2436 in my GMC related to the Secondary Air Injection System Pressure Sensor?
- Diagnose by visually inspecting the air injection system, checking the pressure sensor, testing the secondary air pump, and scanning for other related trouble codes.
4. Can I drive my GMC with OBDII code P2436 indicating a problem with the Secondary Air Injection System Pressure Sensor?
- It is not recommended to drive your GMC with this code as it can lead to further engine damage and increased emissions.
5. How can I repair OBDII code P2436 in my GMC caused by issues with the Secondary Air Injection System Pressure Sensor?
- Repair options may include replacing the secondary air pump, replacing the pressure sensor, repairing damaged wiring or connectors, and clearing the trouble code with a diagnostic tool.
6. Are there any DIY tips for fixing OBDII code P2436 in a GMC related to the Secondary Air Injection System Pressure Sensor?
- DIY tips include checking for loose connections, inspecting for visible damage, and ensuring proper installation of any replaced components.
7. What are the risks of ignoring OBDII code P2436 in a GMC associated with the Secondary Air Injection System Pressure Sensor?
- Ignoring the code can lead to increased emissions, potential damage to the catalytic converter, and poor engine performance over time.
8. How much does it typically cost to repair OBDII code P2436 in a GMC due to problems with the Secondary Air Injection System Pressure Sensor?
- Repair costs can vary depending on the specific issue but may range from $200 to $800 or more, including parts and labor.
9. Can a faulty Secondary Air Injection System Pressure Sensor cause other OBDII codes to appear in a GMC?
- Yes, a malfunctioning pressure sensor can trigger related codes such as P2435, P2437, or other secondary air injection system codes.
10. How often should the Secondary Air Injection System Pressure Sensor be inspected or replaced in a GMC to prevent OBDII code P2436 from occurring?
- It is recommended to have the pressure sensor inspected during regular maintenance intervals and replaced if any signs of wear or malfunction are detected.
Discuss the causes and fixes for P2436 GMC OBDII Code
Code P2436 GMC 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.
