P2235 Code - O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 2
Quick Answer
The diagnostic trouble code P2235 indicates that there is a malfunction in the O2 sensor signal circuit, specifically Bank 2 Sensor 2, where the signal is being shorted to the heater circuit. Common causes include Faulty O2 sensor, Short circuit in the wiring harness, Corrosion or damage to sensor connectors. 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
- P2235 indicates O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 2.
- Common causes
- Common causes include Faulty O2 sensor, Short circuit in the wiring harness, Corrosion or damage to sensor connectors.
- 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.
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Code P2235 Description
The diagnostic trouble code P2235 indicates that there is a malfunction in the O2 sensor signal circuit, specifically Bank 2 Sensor 2, where the signal is being shorted to the heater circuit. This O2 sensor is located after the catalytic converter in the exhaust system. The O2 sensor plays a crucial role in monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.
Common Causes of P2235
- Faulty O2 sensor
- Short circuit in the wiring harness
- Corrosion or damage to sensor connectors
- Issues with the ECM
- Exhaust leaks near the sensor
Symptoms of P2235
- Check engine light illuminated
- Decreased fuel efficiency
- Rough idling or stalling
- Engine misfires
- Increased emissions
How to Fix P2235
- Begin by using a scan tool to confirm the P2235 code and identify the specific O2 sensor causing the issue.
- Inspect the wiring harness and sensor connectors for any signs of damage, corrosion, or short circuits. Repair or replace as necessary.
- Test the O2 sensor's resistance and voltage output to determine if it is functioning correctly. Replace the sensor if it is faulty.
- Clear the trouble code from the ECM memory using the scan tool and perform a test drive to ensure the issue has been resolved.
- If the problem persists, further diagnostics may be required to identify any underlying issues with the ECM or exhaust system components.
Cost to Fix P2235
The typical repair costs for addressing the P2235 code can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. For a more accurate estimate, it is recommended to consult with a local auto repair shop.
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Code P2235 Information for Specific Makes
- P2235 Dodge — O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 2
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