P1137 Mazda Code - Rear O2 Sensor Self Test Fault
Quick Answer
P1137 Mazda indicates Rear O2 Sensor Self Test Fault. Common causes include Faulty Rear O2 Sensor, Rear O2 Sensor harness is open or shorted, Rear O2 Sensor 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
- P1137 Mazda indicates Rear O2 Sensor Self Test Fault.
- Common causes
- Common causes include Faulty Rear O2 Sensor, Rear O2 Sensor harness is open or shorted, Rear O2 Sensor 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 P1137 Mazda Description
What are the Possible Causes of the DTC P1137 Mazda?
- Faulty Rear O2 Sensor
- Rear O2 Sensor harness is open or shorted
- Rear O2 Sensor circuit poor electrical connection
How to Fix the DTC P1137 Mazda?
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 P1137 Mazda 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 P1137 Mazda code?
Need more information on how to fix the P1137 Mazda code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1137 Mazda code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1137 Mazda Code
1. What does the OBDII code P1137 mean on a Mazda?
The P1137 code indicates a "Rear O2 Sensor Self Test Fault," meaning the downstream oxygen sensor has failed its self-diagnostic test.
2. What are the symptoms of a P1137 code on a Mazda?
Common symptoms include the check engine light turning on, poor fuel efficiency, higher emissions, and potentially rough idling or engine performance issues.
3. What causes the P1137 code on a Mazda?
Possible causes include a faulty rear oxygen sensor, damaged wiring or connectors, an exhaust leak, or an issue with the engine control module (ECM).
4. Can a bad catalytic converter trigger the P1137 code?
While unlikely, a failing catalytic converter can disrupt downstream oxygen sensor readings, potentially contributing to this code.
5. How do you diagnose a P1137 code on a Mazda?
Diagnosis typically involves scanning for additional codes, inspecting the rear O2 sensor and its wiring, and checking for exhaust leaks or ECM issues.
6. Can driving with a P1137 code damage my Mazda?
Driving with this code for an extended period may lead to increased emissions and reduced fuel efficiency, but it typically won’t cause severe engine damage.
7. How do you fix a P1137 code on a Mazda?
Repairs may include replacing the rear O2 sensor, fixing damaged wiring or connectors, repairing exhaust leaks, or reprogramming/updating the ECM.
8. Is it expensive to fix a P1137 code on a Mazda?
The cost depends on the root cause. Replacing a rear O2 sensor usually costs between $100 and $300, including parts and labor.
9. Can a P1137 code clear itself after repairs?
If the issue is resolved, the code may clear after several drive cycles, but resetting it with an OBDII scanner ensures the repair is verified.
10. Can I fix the P1137 code on my Mazda myself?
If you have basic automotive knowledge, you can inspect and replace the rear O2 sensor or repair visible wiring damage. For complex issues, professional help is recommended.
Discuss the causes and fixes for P1137 Mazda OBDII Code
Code P1137 Mazda 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.
