P0135 Jeep Code - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
Quick Answer
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground. 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
- P0135 Jeep indicates O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground.
- 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 P0135 Jeep Description
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
What are the Possible Causes of the DTC P0135 Jeep?
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0135 Jeep?
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 P0135 Jeep 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 P0135 Jeep Code
1. What does OBDII code P0135 on a Jeep mean?
The code P0135 indicates an O2 sensor heater circuit malfunction for Bank 1 Sensor 1 on a Jeep.
2. What are the common symptoms of OBDII code P0135 on a Jeep?
Common symptoms include poor fuel efficiency, rough idling, engine misfires, and the illumination of the Check Engine Light.
3. What causes the O2 sensor heater circuit malfunction (P0135) on a Jeep?
The main causes are a faulty O2 sensor, damaged wiring or connectors, a blown fuse, or a problem with the vehicle's computer.
4. How serious is the O2 sensor heater circuit malfunction (P0135) on a Jeep?
While the vehicle may still be driveable, it is important to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.
5. Can I still drive my Jeep with the OBDII code P0135 present?
It is generally safe to drive the vehicle for a short period with the code present, but it is recommended to have the issue diagnosed and repaired as soon as possible.
6. How do I repair the O2 sensor heater circuit malfunction on my Jeep (P0135)?
Repair typically involves testing the O2 sensor, checking the wiring and connectors for damage, replacing the O2 sensor if necessary, and resetting the fault code.
7. Can I fix the OBDII code P0135 on my Jeep myself?
Depending on your skill level and access to tools, you may be able to diagnose and repair the issue yourself. However, if you're unsure, it's best to seek assistance from a qualified mechanic.
8. Is it necessary to replace the O2 sensor to fix code P0135 on a Jeep?
Not always. Sometimes the issue can be resolved by repairing wiring or connectors, replacing a fuse, or addressing a problem with the vehicle's computer.
9. How can I prevent the O2 sensor heater circuit malfunction (P0135) from occurring on my Jeep in the future?
Regular maintenance, including checking the condition of sensors and wiring, can help prevent issues like P0135. Additionally, avoiding harsh driving conditions can prolong the life of these components.
10. Will resetting the fault code make the O2 sensor heater circuit malfunction (P0135) go away permanently?
Resetting the fault code may temporarily turn off the Check Engine Light, but if the underlying issue is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause of the problem.
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