P1152 Mercury Code - Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2
Quick Answer
The P1152 diagnostic trouble code (DTC) for Mercury vehicles indicates a lack of activity or response from the upstream heated oxygen sensor (HO2S) on bank 2 of the engine. Common causes include Faulty upstream heated oxygen sensor (HO2S), Vacuum leaks in the intake system, Fuel pressure regulator malfunction. 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 Mercury indicates Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2.
- Common causes
- Common causes include Faulty upstream heated oxygen sensor (HO2S), Vacuum leaks in the intake system, Fuel pressure regulator malfunction.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1152 Mercury Description
The P1152 diagnostic trouble code (DTC) for Mercury vehicles indicates a lack of activity or response from the upstream heated oxygen sensor (HO2S) on bank 2 of the engine. The upstream HO2S is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When the sensor indicates a rich condition on bank 2, it means that there is an excessive amount of fuel in the exhaust gases, leading to a potentially inefficient combustion process.
Common Causes of P1152 Mercury
- Faulty upstream heated oxygen sensor (HO2S)
- Vacuum leaks in the intake system
- Fuel pressure regulator malfunction
- Leaking fuel injectors
- Issues with the engine's air intake system
Symptoms of P1152 Mercury
- Decreased fuel efficiency
- Engine hesitation or rough idling
- Poor acceleration
- Check Engine Light illuminated
- Strong odor of fuel from the exhaust
How to Fix P1152 Mercury
- Diagnose the issue by using an OBD-II scanner to retrieve the specific trouble code and data related to the HO2S operation.
- Inspect the upstream HO2S and its wiring for any signs of damage or corrosion. Replace the sensor if necessary.
- Check for vacuum leaks in the intake system and repair or replace any damaged components.
- Test the fuel pressure regulator and fuel injectors to ensure proper operation. Replace any faulty parts.
- Clear the trouble code from the ECM memory and perform a road test to verify that the issue has been resolved.
Cost to Fix P1152 Mercury
The typical repair costs for addressing a P1152 code on a Mercury vehicle can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources to ensure a fair price. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.
Need more information about the P1152 Mercury code?
Need more information on how to fix the P1152 Mercury code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1152 Mercury code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1152 Mercury Code
No Frequently Asked Questions about P1152 Mercury Code found.
Discuss the causes and fixes for P1152 Mercury OBDII Code
Code P1152 Mercury comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.