P0137 2008 Nissan Pathfinder Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
Quick Answer
The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 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
- P0137 2008 Nissan Pathfinder indicates Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 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 P0137 2008 Nissan Pathfinder Description
What are the Possible Causes of the DTC P0137 2008 Nissan Pathfinder?
- Faulty Rear Heated Oxygen Sensor Bank 1
- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
How to Fix the DTC P0137 2008 Nissan Pathfinder?
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 P0137 2008 Nissan Pathfinder 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 P0137 2008 Nissan Pathfinder Code
1. What does the OBDII code P0137 mean for a 2008 Nissan Pathfinder?
P0137 indicates that the heated oxygen sensor (Bank 1, Sensor 2) is detecting a low voltage signal, which suggests an issue with the sensor or its circuit.
2. What are the common symptoms of the P0137 code in a 2008 Nissan Pathfinder?
Symptoms may include poor fuel efficiency, a check engine light, rough idle, or reduced engine performance.
3. What causes the P0137 code to appear on a 2008 Nissan Pathfinder?
Possible causes include a faulty oxygen sensor, damaged wiring or connectors in the sensor circuit, exhaust leaks, or a malfunctioning powertrain control module (PCM).
4. Which sensor is Bank 1, Sensor 2 on a 2008 Nissan Pathfinder?
Bank 1, Sensor 2 is the downstream oxygen sensor located behind the catalytic converter on the side of the engine with cylinder 1.
5. Can a dirty or clogged catalytic converter cause the P0137 code?
Yes, a clogged catalytic converter can restrict exhaust flow and affect the downstream oxygen sensor readings, potentially triggering the P0137 code.
6. How can I fix the P0137 code on my 2008 Nissan Pathfinder?
Start by checking the wiring and connectors for damage, replacing the Bank 1, Sensor 2 oxygen sensor if necessary, and inspecting for exhaust leaks or other issues.
7. Is it safe to drive my 2008 Nissan Pathfinder with the P0137 code?
While it might be safe in the short term, driving with this code can result in poor fuel economy and potential damage to the catalytic converter if not addressed.
8. How do I diagnose the P0137 code on a 2008 Nissan Pathfinder?
Use an OBDII scanner to confirm the code, inspect the oxygen sensor and its wiring, check for exhaust leaks, and test the sensor's voltage output with a multimeter.
9. How much does it cost to repair the P0137 code on a 2008 Nissan Pathfinder?
Repair costs vary, but replacing an oxygen sensor typically costs $100–$300, including parts and labor. Wiring repairs or diagnosing other issues may increase the cost.
10. Can a bad oxygen sensor cause other problems in my 2008 Nissan Pathfinder?
Yes, a faulty oxygen sensor can lead to poor engine performance, increased emissions, and damage to the catalytic converter if ignored.
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