AutoCodes – Ford – P1137 2000 Ford F150

P1137 2000 Ford F150 Code - Lack Of Heated Oxygen Sensor Switches Bank 1 Sensor 2 Switch Indicates Lean

Quick Answer

The Heated Oxygen Sensor 2 (HO2S2) (Downstream), after the three-way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Exhaust gas leaks, Faulty Heated Oxygen Sensor 2 (HO2S2) (Downstream) Bank 1, Heated Oxygen Sensor 2 Bank 1 harness is open or shorted. 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
P1137 2000 Ford F150 indicates Lack Of Heated Oxygen Sensor Switches Bank 1 Sensor 2 Switch Indicates Lean.
Common causes
Common causes include Exhaust gas leaks, Faulty Heated Oxygen Sensor 2 (HO2S2) (Downstream) Bank 1, Heated Oxygen Sensor 2 Bank 1 harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,225
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 24, 2020
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Code P1137 2000 Ford F150 Description

The Heated Oxygen Sensor 2 (HO2S2) (Downstream), after the three-way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air-fuel mixture (air-fuel ratio) must maintain near the ideal stoichiometric ratio. The HO2S2 output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Powertrain Control Module (PCM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S2 generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The PCM interprets Lean when the HO2S2 voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The PCM interprets Rich when the HO2S2 voltage is above 0.45 V. The P1137 code will set when the PCM detects that the HO2S2 signal is below the voltage of range for an extended period.
OBDII Code P1137 2000 Ford F150 - Lack Of Heated Oxygen Sensor Switches Bank 1 Sensor 2 Switch Indicates Lean - AutoCodes.com
P1137 2000 Ford F150 Code - Lack Of Heated Oxygen Sensor Switches Bank 1 Sensor 2 Switch Indicates Lean

What are the Possible Causes of the DTC P1137 2000 Ford F150?

  • Exhaust gas leaks
  • Faulty Heated Oxygen Sensor 2 (HO2S2) (Downstream) Bank 1
  • Heated Oxygen Sensor 2 Bank 1 harness is open or shorted
  • Heated Oxygen Sensor 2 Bank 1 circuit poor electrical connection
  • Inappropriate fuel pressure
  • Faulty fuel injectors

How to Fix the DTC P1137 2000 Ford F150?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1137 2000 Ford F150 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.

Need more information about the P1137 2000 Ford F150 code?

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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 P1137 2000 Ford F150 Code

1. What does the OBDII code P1137 mean on a 2000 Ford F150?

P1137 indicates that the oxygen sensor for Bank 1 Sensor 2 is not switching properly and is showing a lean condition.

2. What are the common symptoms of P1137 on a 2000 Ford F150?

Symptoms may include poor fuel efficiency, rough idle, hesitation during acceleration, and the Check Engine Light being illuminated.

3. What causes the P1137 code to appear on my Ford F150?

Common causes include a faulty downstream oxygen sensor (Bank 1 Sensor 2), exhaust leaks, a vacuum leak, or issues with the fuel system, such as low fuel pressure.

4. Is it safe to drive my 2000 Ford F150 with a P1137 code?

While it may be safe to drive short-term, ignoring the issue can lead to reduced fuel efficiency and potential damage to the catalytic converter.

5. How do I fix the P1137 code on my Ford F150?

Start by checking for exhaust leaks, inspecting the oxygen sensor wiring and connections, and testing or replacing the Bank 1 Sensor 2 oxygen sensor if needed.

6. Can a dirty mass airflow sensor cause the P1137 code?

Yes, a dirty or faulty mass airflow sensor can cause incorrect air-fuel mixture readings, potentially triggering this code.

7. How can I tell if the oxygen sensor is the issue for the P1137 code?

You can test the oxygen sensor with a multimeter or scan tool to check its voltage output and switching performance.

8. Does a vacuum leak affect the P1137 code?

Yes, a vacuum leak can cause the engine to run lean, which may result in the P1137 code being triggered.

9. What tools are needed to diagnose and fix the P1137 code?

You may need a scan tool, multimeter, oxygen sensor socket, and basic hand tools to diagnose and repair the issue.

10. Can a clogged fuel filter cause the P1137 code?

Yes, a clogged fuel filter can restrict fuel flow, leading to a lean condition and potentially triggering the P1137 code.

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