P0136 2009 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 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
- P0136 2009 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
- 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 P0136 2009 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 2009 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 2009 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 2009 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 2009 Toyota Camry Code
1. What does OBDII code P0136 mean for a 2009 Toyota Camry?
The code P0136 indicates an Oxygen Sensor Circuit Malfunction for Bank 1 Sensor 2 in a 2009 Toyota Camry.
2. What are the common symptoms of a P0136 code on a 2009 Toyota Camry?
Common symptoms of a P0136 code can include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light.
3. What are the possible causes of a P0136 code on a 2009 Toyota Camry?
Possible causes of a P0136 code include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine's air-fuel ratio.
4. How can I diagnose a P0136 code on my 2009 Toyota Camry?
Diagnosing a P0136 code typically involves using an OBDII scanner to retrieve the code, inspecting the oxygen sensor and related components for damage, and testing the sensor's voltage and resistance.
5. Can I continue driving my 2009 Toyota Camry with a P0136 code?
It is not recommended to continue driving with a P0136 code, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.
6. How do I repair a P0136 code on my 2009 Toyota Camry?
Repairing a P0136 code may involve replacing the Bank 1 Sensor 2 oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or addressing issues with the air-fuel mixture.
7. Are there any DIY tips for fixing a P0136 code on a 2009 Toyota Camry?
While some may attempt to replace the oxygen sensor themselves, it is recommended to consult a professional mechanic for proper diagnosis and repair of a P0136 code to ensure the issue is resolved correctly.
8. How much does it cost to repair a P0136 code on a 2009 Toyota Camry?
The cost of repairing a P0136 code can vary depending on the root cause of the issue, but it may range from $100 to $300 for parts and labor, with the oxygen sensor being a common component to replace.
9. Can a P0136 code on a 2009 Toyota Camry be prevented?
Regular maintenance, such as keeping up with scheduled tune-ups and inspections, can help prevent issues that may trigger a P0136 code in a 2009 Toyota Camry.
10. Will resetting the check engine light clear a P0136 code on a 2009 Toyota Camry?
Resetting the check engine light may temporarily clear the code, but if the underlying issue triggering the P0136 code is not addressed, the code is likely to reappear.
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