P0135 2017 GMC Sierra Code - HO2S Heater Performance Bank 1 Sensor 1
Quick Answer
Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 1 Sensor 1 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0135 2017 GMC Sierra indicates HO2S Heater Performance Bank 1 Sensor 1.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 1 Sensor 1 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0135 2017 GMC Sierra Description
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the HO2S 1 heater current is out of factory specifications.
What are the Possible Causes of the DTC P0135 2017 GMC Sierra?
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
- Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted
- Heated Oxygen Sensor Bank 1 Sensor 1 circuit poor electrical connection
- Heated Oxygen Sensor Bank 1 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0135 2017 GMC Sierra?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0135 2017 GMC Sierra 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 P0135 2017 GMC Sierra code?
Need more information on how to fix the P0135 2017 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0135 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0135 2017 GMC Sierra Code
What does the OBDII code P0135 mean on a 2017 GMC Sierra?
P0135 indicates a malfunction in the heater circuit of the oxygen sensor (HO2S) located in Bank 1, Sensor 1, which is responsible for preheating the sensor to ensure accurate air-fuel ratio readings.
What are the common symptoms of code P0135 on a 2017 GMC Sierra?
Symptoms may include an illuminated check engine light, increased fuel consumption, rough idling, and poor engine performance.
What causes the P0135 code on a 2017 GMC Sierra?
Common causes include a faulty oxygen sensor, damaged wiring or connectors in the heater circuit, a blown fuse, or an issue with the engine control module (ECM).
Can I drive my 2017 GMC Sierra with a P0135 code?
While the truck may still be operable, driving with this code can lead to decreased fuel efficiency and potential long-term damage to the catalytic converter.
How do I diagnose the P0135 code on my 2017 GMC Sierra?
Use a multimeter to check the oxygen sensor heater circuit for continuity, inspect wiring and connectors for damage, and ensure the fuse for the heater circuit is intact.
How do I fix the P0135 code on a 2017 GMC Sierra?
Repairs may include replacing the oxygen sensor, repairing damaged wiring or connectors, or replacing a blown fuse. In rare cases, the ECM may need to be reprogrammed or replaced.
How much does it cost to fix the P0135 code on a 2017 GMC Sierra?
Repair costs can range from $150 to $400, depending on whether you need to replace the oxygen sensor or perform additional wiring repairs.
What tools do I need to fix the P0135 code on my 2017 GMC Sierra?
You’ll need an OBDII scanner, a multimeter, basic hand tools, and potentially a replacement oxygen sensor or wiring components.
Can a dirty air filter cause the P0135 code on a 2017 GMC Sierra?
No, a dirty air filter will not cause this code, as it specifically relates to the oxygen sensor’s heater circuit.
How can I prevent the P0135 code from reoccurring on my 2017 GMC Sierra?
Regularly inspect the oxygen sensor and its wiring for damage, and ensure your vehicle receives timely maintenance to prevent electrical issues.
Discuss the causes and fixes for P0135 2017 GMC Sierra OBDII Code
Code P0135 2017 GMC Sierra 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.
