P1104 Code - MAP Sensor Low Voltage
Quick Answer
The P1104 diagnostic trouble code (DTC) indicates that the Manifold Absolute Pressure (MAP) sensor is reporting a low voltage to the engine control module (ECM) or powertrain control module (PCM). Common causes include Faulty MAP sensor, Damaged wiring or connectors in the sensor circuit, Vacuum leaks in the intake system. 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
- P1104 indicates MAP Sensor Low Voltage.
- Common causes
- Common causes include Faulty MAP sensor, Damaged wiring or connectors in the sensor circuit, Vacuum leaks in the intake system.
- 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 P1104 Description
The P1104 diagnostic trouble code (DTC) indicates that the Manifold Absolute Pressure (MAP) sensor is reporting a low voltage to the engine control module (ECM) or powertrain control module (PCM). The MAP sensor is a crucial component in the engine management system, as it measures the intake manifold pressure, which helps the ECM/PCM determine the correct air-fuel mixture for combustion. When the MAP sensor reports low voltage, it can lead to incorrect fuel delivery, timing, and overall engine performance.
Common Causes of P1104
- Faulty MAP sensor
- Damaged wiring or connectors in the sensor circuit
- Vacuum leaks in the intake system
- ECM/PCM malfunction
- Intake manifold issues
Symptoms of P1104
- Decreased fuel efficiency
- Rough idling or stalling
- Hesitation or jerking during acceleration
- Engine misfires
- Loss of power
How to Fix P1104
- Begin by conducting a thorough inspection of the MAP sensor, wiring, and connectors for any visible damage or corrosion.
- Test the MAP sensor using a multimeter to check for proper voltage output.
- Check for vacuum leaks in the intake system and repair as necessary.
- If the MAP sensor is determined to be faulty, replace it with a new sensor following manufacturer guidelines.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1104
The cost of repairing a MAP sensor low voltage issue can vary depending on the specific cause of the problem and the vehicle's make and model. On average, the cost of replacing a MAP sensor can range from $100 to $300, including parts and labor. Additional costs may apply if there are other underlying issues that need to be addressed. It is recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's needs. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to inquire about rates in your area for a more precise cost estimate.
Need more information about the P1104 code?
Need more information on how to fix the P1104 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1104 code diagnosed by a professional: Find a repair shop in your area
Code P1104 Information for Specific Makes
- P1104 Audi — HO2S12 Sensor Circuit Voltage Too Low Air Leak
- P1104 BMW — Differential Pressure Sensor Intake Manifold Plausibility
- P1104 Hyundai — Mass Air Flow Ground Malfunction
- P1104 Infiniti — MAP Sensor Low Voltage
- P1104 Jaguar — Mass Air Flow Ground Malfunction
- P1104 MINI — Differential Pressure Sensor Intake Manifold Plausibility
- P1104 Mitsubishi — Turbocharger Wastegate Solenoid
- P1104 Nissan — MAP Sensor Low Voltage
- P1104 Subaru — Engine Torque Control Signal Circuit Malfunction
- P1104 Volkswagen — HO2S12 Sensor Circuit Voltage Too Low Air Leak
Frequently Asked Questions about P1104 Code
1. What are the common symptoms of OBDII code P1104 (MAP Sensor Low Voltage)?
- Common symptoms include engine hesitation, rough idle, poor acceleration, and potentially stalling.
2. What are the typical causes of OBDII code P1104?
- The code P1104 is usually triggered by a faulty MAP (Manifold Absolute Pressure) sensor, damaged wiring or connectors, or a problem with the sensor's power supply.
3. How can I diagnose the cause of OBDII code P1104?
- To diagnose the issue, you can visually inspect the MAP sensor and its wiring, check for any loose connections, perform a voltage test on the sensor, and use a scan tool to gather more data.
4. Can a dirty or clogged MAP sensor cause code P1104?
- Yes, a dirty or clogged MAP sensor can lead to incorrect voltage readings and trigger code P1104. It is recommended to clean or replace the sensor if this is the case.
5. What are some repair tips for fixing OBDII code P1104?
- Repair tips include checking and repairing any damaged wiring or connectors, replacing the MAP sensor if faulty, ensuring the sensor is receiving proper voltage, and clearing the code to see if it returns.
6. Is it safe to continue driving with OBDII code P1104 present?
- It is not recommended to drive with code P1104 active, as it can cause drivability issues and potentially lead to further damage if left unaddressed.
7. Can a DIY enthusiast fix OBDII code P1104 at home?
- Depending on the root cause, DIY enthusiasts with proper tools and knowledge may be able to fix code P1104 by replacing the MAP sensor, checking wiring connections, and clearing the code.
8. Will resetting the check engine light resolve OBDII code P1104?
- Resetting the check engine light may temporarily clear the code, but it is crucial to diagnose and address the underlying issue causing code P1104 to prevent it from reoccurring.
9. How much does it typically cost to repair OBDII code P1104 at a mechanic or dealership?
- The cost of repairing code P1104 can vary depending on the cause and location, but it may range from $100 to $300 for parts and labor at a mechanic or dealership.
10. Can extreme weather conditions affect the MAP sensor and trigger code P1104?
- Yes, extreme weather conditions such as extreme cold or heat can impact the performance of the MAP sensor, potentially leading to low voltage readings and triggering code P1104.
Discuss the causes and fixes for P1104 OBDII Code
Code P1104 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.