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P0135 Chrysler Code - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Quick Answer

The P0135 code for Chrysler vehicles indicates a malfunction in the O2 sensor heater circuit for Bank 1 Sensor 1. Common causes include Faulty O2 sensor heater circuit, Corroded or damaged wiring/connectors, Blown fuse related to the O2 sensor heater circuit. 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 Chrysler indicates O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1.
Common causes
Common causes include Faulty O2 sensor heater circuit, Corroded or damaged wiring/connectors, Blown fuse related to the O2 sensor heater circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0135 Chrysler Description

The P0135 code for Chrysler vehicles indicates a malfunction in the O2 sensor heater circuit for Bank 1 Sensor 1. The O2 sensor, or oxygen sensor, is a crucial component of the vehicle's emissions control system. It measures the amount of oxygen in the exhaust gases and sends this information to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. The heater circuit in the O2 sensor is responsible for quickly bringing the sensor up to operating temperature, allowing it to accurately measure oxygen levels in the exhaust.

OBDII Code P0135 Chrysler - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 Chrysler Code - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Common Causes of P0135 Chrysler

  1. Faulty O2 sensor heater circuit
  2. Corroded or damaged wiring/connectors
  3. Blown fuse related to the O2 sensor heater circuit
  4. ECM software issue
  5. Exhaust system leaks

Symptoms of P0135 Chrysler

  1. Check Engine Light illuminated on the dashboard
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Engine misfires
  5. Failed emissions test

How to Fix P0135 Chrysler

  1. Use an OBD-II scanner to confirm the P0135 code and diagnose the specific issue with the O2 sensor heater circuit.
  2. Inspect the wiring and connectors for any damage or corrosion. Replace as necessary.
  3. Check and replace any blown fuses related to the O2 sensor heater circuit.
  4. Test the O2 sensor heater circuit for proper voltage and resistance. Replace the O2 sensor if necessary.
  5. Clear the error code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0135 Chrysler

The typical repair costs for a P0135 code can range from $150 to $400, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops may charge less.

What does this mean?

Tech Notes for P0135 Chrysler

The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. The code is triggered when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the sensor and connector are OK, replacing the O2 Sensor 1 usually takes care of the problem

When is the Code Detected?

Current amperage in the front heated oxygen sensor heater circuit is out of the normal range. (An improper voltage drop signal is sent to ECM through the front heated oxygen sensor heat

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0135 Chrysler Code

1. What does the OBDII code P0135 mean on a Chrysler?

P0135 indicates a malfunction in the oxygen sensor heater circuit for Bank 1 Sensor 1, meaning the sensor's built-in heater is not working properly.

2. What are the symptoms of a P0135 code in a Chrysler?

Symptoms may include an illuminated check engine light, reduced fuel efficiency, rough idling, or increased emissions.

3. What causes the P0135 code on a Chrysler?

Common causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or a malfunctioning engine control module (ECM).

4. How do I diagnose the P0135 code in my Chrysler?

Begin by inspecting the oxygen sensor wiring and connectors for damage, check the sensor's heater resistance with a multimeter, and test for proper voltage supply to the heater circuit.

5. Can I drive my Chrysler with a P0135 code?

While the vehicle may still be drivable, prolonged operation with this code can lead to reduced fuel efficiency and increased emissions, so prompt repair is recommended.

6. How is the P0135 code typically fixed?

Repairs may involve replacing the faulty oxygen sensor, repairing damaged wiring or connectors, or replacing a blown fuse in the heater circuit.

7. How much does it cost to fix a P0135 code on a Chrysler?

The cost to replace a faulty oxygen sensor typically ranges from $150 to $300, depending on the vehicle and labor rates.

8. Can a dirty oxygen sensor cause the P0135 code?

No, this code specifically relates to the heater circuit and not the sensor's ability to measure oxygen levels.

9. Is a P0135 code related to emissions testing failure?

Yes, a malfunctioning oxygen sensor heater can lead to increased emissions, which may cause the vehicle to fail an emissions test.

10. Can a P0135 code clear itself after repairs?

After fixing the issue, the code may clear on its own after several drive cycles, but using an OBDII scanner to manually clear the code is faster.

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