P0135 Lincoln 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 Lincoln 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 Lincoln 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 Lincoln?
- 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 Lincoln?
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 Lincoln 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 Lincoln Code
1. What does OBDII code P0135 mean on a Lincoln?
P0135 indicates a malfunction in the heater circuit of the oxygen sensor located on Bank 1, Sensor 1.
2. What is Bank 1, Sensor 1 on a Lincoln vehicle?
Bank 1 refers to the side of the engine with cylinder 1, and Sensor 1 is the upstream oxygen sensor located before the catalytic converter.
3. What are the symptoms of a P0135 code on a Lincoln?
Common symptoms include an illuminated Check Engine Light, increased fuel consumption, rough idling, or failed emissions tests.
4. What causes the P0135 code to appear?
Possible causes include a faulty oxygen sensor, damaged wiring or connectors in the heater circuit, a blown fuse, or a malfunctioning powertrain control module (PCM).
5. Can a bad oxygen sensor cause a P0135 code?
Yes, a faulty oxygen sensor is a common cause of the P0135 code, as it may fail to heat up properly.
6. How do I diagnose a P0135 code on a Lincoln?
Start by inspecting the oxygen sensor wiring and connectors for damage or corrosion, checking the sensor’s resistance, and verifying power supply to the heater circuit.
7. Can I drive my Lincoln with a P0135 code?
While you can drive with a P0135 code, it’s not recommended as it may lead to poor fuel efficiency and potential damage to the catalytic converter over time.
8. How do I fix a P0135 code on a Lincoln?
Repairs may involve replacing the oxygen sensor, repairing damaged wiring, replacing a blown fuse, or addressing issues with the PCM.
9. How much does it cost to fix a P0135 code on a Lincoln?
The cost to fix a P0135 code typically ranges from $150 to $500, depending on whether you need a new oxygen sensor or additional repairs to the wiring or PCM.
10. Can a P0135 code clear itself?
No, a P0135 code will not clear itself. The underlying issue must be repaired, and the code can then be cleared with an OBDII scanner.
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