P0136 2011 Toyota Camry Code - Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2
Quick Answer
In order to obtain a high purification rate of the carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxide (NOx) components in the exhaust gas, a TWC is used. Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, EFI Relay, Rear Heated Oxygen Sensor Bank 1 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
- P0136 2011 Toyota Camry indicates Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, EFI Relay, Rear Heated Oxygen Sensor Bank 1 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 P0136 2011 Toyota Camry Description
The HO2 sensor is located behind the TWC, and detects the oxygen concentration in the exhaust gas. Since the sensor is integrated with the heater that heats the sensing portion, it is possible to detect the oxygen concentration even when the intake air volume is low (the exhaust gas temperature is low). When the air-fuel ratio becomes lean, the oxygen concentration in the exhaust gas is rich. The HO2 sensor informs the ECM that the post-TWC air-fuel ratio is lean (low voltage, i.e. less than 0.45 V). Conversely, when the air-fuel ratio is richer than the stoichiometric air-fuel level, the oxygen concentration in the exhaust gas becomes lean. The HO2 sensor informs the ECM that the post-TWC air-fuel ratio is rich (high voltage, i.e. more than 0.45 V). The HO2 sensor has the property of changing its output voltage drastically when the air-fuel ratio is close to the stoichiometric level.
The ECM uses the supplementary information from the HO2 sensor to determine whether the air-fuel ratio after the TWC is rich or lean, and adjusts the fuel injection time accordingly. Thus, if the HO2 sensor is working improperly due to internal malfunctions, the ECM is unable to compensate for deviations in the primary air-fuel ratio control.
What are the Possible Causes of the DTC P0136 2011 Toyota Camry?
- Faulty Rear Heated Oxygen Sensor Bank 1
- EFI Relay
- 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 P0136 2011 Toyota Camry?
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 P0136 2011 Toyota Camry 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 P0136 2011 Toyota Camry Code
1. What does the OBDII code P0136 on a 2011 Toyota Camry mean?
- The code P0136 indicates an Oxygen Sensor Circuit Malfunction on Bank 1 Sensor 2 in the exhaust system.
2. What are the common symptoms of a P0136 code in a 2011 Toyota Camry?
- Common symptoms include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light.
3. What causes the P0136 code to trigger in a 2011 Toyota Camry?
- The code is often triggered by a faulty oxygen sensor, wiring issues, exhaust leaks, or a failing catalytic converter.
4. How can I diagnose the P0136 code on a 2011 Toyota Camry?
- Diagnosis involves checking the oxygen sensor's wiring, connectors, and sensor functionality using a multimeter or scan tool.
5. Can a dirty or contaminated sensor cause a P0136 code in a 2011 Toyota Camry?
- Yes, a dirty or contaminated oxygen sensor can lead to inaccurate readings and trigger the P0136 code.
6. What are the repair options for a P0136 code in a 2011 Toyota Camry?
- Repairs may involve replacing the oxygen sensor, repairing wiring issues, fixing exhaust leaks, or replacing the catalytic converter if necessary.
7. Is it safe to drive a 2011 Toyota Camry with a P0136 code?
- It's generally safe to drive the vehicle with this code, but it's recommended to address the issue promptly to prevent further damage and ensure optimal performance.
8. How much does it typically cost to repair a P0136 code on a 2011 Toyota Camry?
- Repair costs can vary depending on the root cause, but replacing an oxygen sensor may cost between $100 to $300, while catalytic converter replacement can be more expensive.
9. Can I reset the P0136 code on a 2011 Toyota Camry after making repairs?
- Yes, the code can be cleared using an OBDII scanner after the necessary repairs have been completed to see if the issue has been resolved.
10. How often should the oxygen sensors be inspected in a 2011 Toyota Camry to prevent a P0136 code?
- It's recommended to inspect the oxygen sensors during regular maintenance intervals or whenever you notice any symptoms of poor engine performance to avoid triggering the P0136 code.
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