P1152 2003 Ford F150 Code - Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2
Quick Answer
The Heated Oxygen Sensor (HO2S) Monitor is an on-board strategy designed to monitor the HO2S sensors for a malfunction or deterioration that can affect emissions. Common causes include Faulty Upstream Oxygen Sensor Bank 2, Fuel pressure high or low, MAF sensor dirty/defective. 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
- P1152 2003 Ford F150 indicates Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2.
- Common causes
- Common causes include Faulty Upstream Oxygen Sensor Bank 2, Fuel pressure high or low, MAF sensor dirty/defective.
- 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.
Code P1152 2003 Ford F150 Description
• The HO2S sensor senses the oxygen content in the exhaust flow and outputs a voltage between zero and 1.0 volt. Lean of stoichiometric (air/fuel ratio of approximately 14.7:1 for gasoline engines), the HO2S will generate a voltage between zero and 0.45 volt. Rich of stoichiometric, the HO2S will generate a voltage between 0.45 and 1.0 volt.
• The HO2S Monitor evaluates both the upstream (Fuel Control) and downstream (Catalyst Monitor) HO2S for proper function.
• Once the HO2S Monitor is enabled, the upstream HO2S signal voltage amplitude and response frequency are checked. Excessive voltage is determined by comparing the HO2S signal voltage to a maximum calibratable threshold voltage.
• A fixed frequency closed loop fuel control routine is executed and the upstream HO2S voltage amplitude and output response frequency are observed. A sample of the upstream HO2S signal is evaluated to determine if the sensor is capable of switching or has a slow response rate.
• An HO2S heater circuit fault is determined by turning the heater on and off and looking for a corresponding change in the OSM and by
measuring the current going through the heater circuit.
• The MIL is activated after a fault is detected on two consecutive OBD II drive cycles.
What are the Possible Causes of the DTC P1152 2003 Ford F150?
- Faulty Upstream Oxygen Sensor Bank 2
- Fuel pressure high or low
- MAF sensor dirty/defective
- Vacuum leak on engine
- Leaking fuel injector or fuel pressure regulator
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P1152 2003 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 P1152 2003 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.
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Frequently Asked Questions about P1152 2003 Ford F150 Code
1. What are the common symptoms of OBDII code P1152 in a 2003 Ford F150?
- Common symptoms include decreased fuel efficiency, rough idling, and potentially a noticeable decrease in engine performance.
2. What does the OBDII code P1152 in a 2003 Ford F150 indicate?
- The code indicates a problem with the upstream heated oxygen sensor on bank 2, suggesting that the sensor is detecting a rich air-to-fuel ratio.
3. What are the possible causes of OBDII code P1152 in a 2003 Ford F150?
- Possible causes include a faulty oxygen sensor, wiring issues, a vacuum leak, a fuel injector problem, or an issue with the engine's air intake system.
4. How can I diagnose the cause of OBDII code P1152 in my 2003 Ford F150?
- Diagnosing the issue may involve visually inspecting wiring and connections, testing the oxygen sensor, checking for vacuum leaks, and using a scan tool to monitor sensor readings.
5. Can a dirty air filter cause OBDII code P1152 in a 2003 Ford F150?
- Yes, a dirty air filter can disrupt the air-to-fuel ratio and potentially trigger the code, so it's recommended to inspect and replace the air filter if necessary.
6. What are the repair options for resolving OBDII code P1152 in a 2003 Ford F150?
- Repair options may include replacing the upstream oxygen sensor, repairing wiring or connections, fixing vacuum leaks, cleaning or replacing the air filter, or addressing any other underlying issues identified during diagnosis.
7. Can I drive my 2003 Ford F150 with OBDII code P1152?
- It is not recommended to drive your vehicle with this code present, as it can lead to decreased fuel efficiency and potential engine performance issues. It's best to address the problem promptly.
8. How much does it typically cost to repair OBDII code P1152 in a 2003 Ford F150?
- The cost of repair can vary depending on the underlying issue, but it may range from around $100 for a simple fix like replacing an air filter to several hundred dollars for more complex repairs like replacing an oxygen sensor.
9. Is it possible to reset the OBDII code P1152 in a 2003 Ford F150 without fixing the issue?
- While you can clear the code with a scan tool, it will likely reappear if the underlying problem is not resolved. It's recommended to address the root cause of the issue to prevent further issues.
10. How often should the oxygen sensors be replaced in a 2003 Ford F150 to prevent OBDII code P1152 from occurring?
- Oxygen sensors generally have a lifespan of around 60,000 to 100,000 miles. It's advisable to follow the manufacturer's recommendations and replace them as needed to prevent issues like code P1152.
Discuss the causes and fixes for P1152 2003 Ford F150 OBDII Code
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I've been having some strange things happen with my 2003 Ford F150 S.Crew Lariat 4x4. I have an OBD2 DTC Reader connected live to my laptop ever since my 4R70W Transmission's Fwd Drum/Direct Drive Clutch failed losing 3rd and 4th as well as OD, for the 3rd time requiring another full rebuild. I'm down rebuilding, So... I'm installing a MonsterTransmission HD Performance 4R70W with all the failure points (Stamped Steel Drum changed to a Billet Fwd Clutch Drum, Single piece servos and accumulators, upgraded pumps, bands, valve body, Firm/Positive and crisp shift kit, and a bunch more. Highly recommended!) But that's not the point of this post. So I was getting a steady stream of new DTC's for about 10 days until I cleaned out the EGR then no codes for almost 2 months (that's while driving in 1st and 2nd gear with OD Off with a max speed of 50-55mph @ 2800-2950 rpm.). But I've been getting new codes all-of-a-sudden. From a misfire in cylinder #8, P115A, & P1152. I went and bought new plugs and coils. And before I changed them the code was gone and P115A was there... Now P115A is gone and P1152 is there... I'm lost.... I'm gonna scan again this morning and I'll update.
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For the P1152 code the most common problem is the Upstream Oxygen Sensor Bank 2, in some cases the problem is the Mass Air Flow (MAF) sensor. Before you replace any parts, make sure you use high octane gas and if possible clean the MAF and replace the air filter.
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