P0106
Fix within a few daysYour engine computer is getting a Manifold Absolute Pressure (MAP) sensor signal that doesn't make sense compared to other engine data.
Code P0106 means your engine computer sees an issue with the Manifold Absolute Pressure (MAP) sensor's signal. Common causes: Faulty MAP sensor (60%), vacuum leaks (25%), wiring issues (10%). Drivability: Yes, for short trips, but fix quickly. Repair cost: $50-$200 DIY, $150-$500 professional.
Can I Drive With P0106?
Yes, for short trips only
Essential trips under 10 miles, avoid highways and heavy acceleration. Expect reduced performance and fuel economy.
Stop driving immediately if: Engine stalls frequently, significant power loss, or a flashing Check Engine Light (indicating a severe misfire).
Symptoms of P0106
- 1Check Engine Light is on
- 2Engine runs rough or idles poorly
- 3Engine stalls, especially when coming to a stop
- 4Poor acceleration or lack of power
- 5Reduced fuel economy
- 6Engine is hard to start
Common Causes of P0106
Parts most likely causing this code, ranked by probability
The MAP sensor itself has failed internally, sending incorrect or erratic pressure readings to the engine computer.
60% of P0106 cases are fixed by replacing the MAP sensor
Unmetered air entering the intake manifold through a cracked hose or gasket changes the manifold pressure, causing the MAP sensor reading to be out of expected range.
25% of P0106 cases are fixed by repairing vacuum leaks
Damaged wires, a loose connection, or corrosion at the MAP sensor connector can interrupt or distort the sensor's signal.
10% of P0106 cases are fixed by repairing wiring or connector issues
A very dirty throttle body or a stuck-open EGR valve can directly affect manifold pressure, causing the MAP sensor to report an out-of-range value.
5% of P0106 cases are fixed by addressing throttle body or EGR valve issues
Check These First (Before Buying Parts)
- Visually inspect all vacuum hoses connected to the intake manifold for cracks, disconnections, or loose clamps.
- Check the electrical connector on the MAP sensor for any signs of corrosion or damage, ensuring it's securely plugged in.
How to Diagnose P0106
- 1Visually inspect the MAP sensor and its electrical connector for damage or corrosion.
- 2Check all vacuum lines connected to the intake manifold for cracks, disconnections, or leaks.
- 3Use a scan tool to monitor MAP sensor readings at idle and during acceleration; compare to expected values.
- 4Perform a smoke test on the intake system to pinpoint any vacuum leaks.
- 5Inspect the throttle body for excessive carbon buildup and clean if necessary.
- 6Test the EGR valve for proper operation, ensuring it closes fully when it should.
P0106 on Popular Vehicles
Honda Accord
2003-2012P0106 is a common code on these models, frequently caused by a failing MAP sensor. Inspect the sensor's electrical connector for corrosion.
70% fixed by replacing MAP sensor
Ford F-150
2004-2014Vacuum leaks are a significant cause of P0106 on F-150s, particularly around the intake manifold gaskets, PCV valve, or brake booster hose. A smoke test is highly recommended.
40% fixed by repairing vacuum leaks
Chevrolet Silverado
2007-2013Similar to Ford trucks, vacuum leaks are a frequent culprit for P0106 on Silverados. Also, check for a dirty throttle body or a sticking EGR valve.
35% fixed by repairing vacuum leaks
Frequently Asked Questions
What does P0106 mean?
P0106 indicates that your vehicle's engine control module (ECM) or powertrain control module (PCM) has detected a problem with the Manifold Absolute Pressure (MAP) sensor's signal, meaning it's outside the expected range for current engine conditions.
Can I drive with P0106?
Yes, you can drive for short trips, but you should fix it within a few days. You will likely experience reduced engine performance, poor fuel economy, and potentially stalling. Ignoring it can lead to more serious issues.
Will P0106 clear itself?
No, P0106 will not clear itself. The engine computer will keep the Check Engine Light on until the underlying problem with the MAP sensor or related system is diagnosed and repaired.
How do I fix P0106 myself?
Start by inspecting vacuum lines for cracks. If no leaks are found, test the MAP sensor's voltage with a multimeter. If the sensor is faulty, replace it. Clean the throttle body if it's dirty, and check the MAP sensor's electrical connector for corrosion.
How much does it cost to fix P0106?
A DIY fix for P0106 typically costs $50-$200, mainly for a new MAP sensor or vacuum hoses. Professional repair at a shop will cost $150-$500, including diagnosis and labor.
P0106 keeps coming back - why?
P0106 keeps coming back because the root cause was not fully addressed. This often happens if you only replaced the MAP sensor but had an underlying vacuum leak, a wiring issue, or a dirty throttle body that was overlooked.
Will P0106 fail emissions/smog test?
Yes, P0106 will cause your vehicle to fail an emissions or smog test. The Check Engine Light being on automatically results in a failure in most states, and the underlying issue can also affect exhaust gas composition.
What's the difference between P0106 and P0107?
P0106 indicates a general 'range/performance' problem with the MAP sensor signal, meaning the signal is inconsistent or implausible. P0107 specifically means the MAP sensor signal is 'low input', indicating a voltage reading that is too low.
P0106 on Honda Civic?
P0106 on a Honda Civic often points directly to a faulty MAP sensor. These sensors are known to fail on various Honda models, especially older generations. Always check for vacuum leaks first, but a new MAP sensor is a very common fix for Civics.
Questions to Ask Your Mechanic
Did you check for vacuum leaks using a smoke machine?
Good answer: Yes, we performed a smoke test and found no leaks in the intake system. We then moved on to testing the MAP sensor itself.
What were the live data readings for the MAP sensor at idle and under load?
Good answer: At idle, the MAP sensor was reading X kPa, and under acceleration, it was Y kPa. These readings were inconsistent with the throttle position and RPM, indicating a sensor malfunction.
Repair Cost Estimate
DIY Repair
Parts only
$50-$200
Shop Repair
Parts + labor
$150-$500
Save $100-$300 by doing it yourself
Difficulty
beginner
Time
0.5-2 hours
Beginner-friendly - Replacing a MAP sensor or fixing a vacuum leak is generally simple and requires basic hand tools.
Cost of Waiting
Ignoring P0106 can lead to your engine running too rich or too lean, which significantly reduces fuel economy and can damage expensive components like your catalytic converter ($800-$2,500 repair). A $50-$150 MAP sensor replacement now prevents a much larger bill later.
While You're In There...
A clogged air filter can sometimes contribute to incorrect air flow readings, and it's a simple, inexpensive maintenance item to replace.
If you're inspecting the intake system, cleaning a dirty throttle body is a quick and easy way to ensure proper airflow and prevent future issues.
Tools You'll Need
- OBD-II Scan Tool
- Multimeter (optional, for testing sensor)
- Socket Set
- Screwdriver Set
- Vacuum Line Pliers (optional)
- Smoke Machine (for vacuum leak detection, optional but recommended)
P0106 is a very common sensor code. Most repairs are straightforward, often just replacing the MAP sensor or a vacuum hose, and your engine will run smoothly again.
- Family-owned since 1957
- 990,000+ happy customers
- Fast nationwide shipping
- Easy returns
Your Next Steps
Step 1: Visually inspect all vacuum lines and the MAP sensor connector. Look for any obvious cracks, disconnections, or corrosion.
Step 2: If no visual issues are found, use an OBD-II scan tool to monitor the MAP sensor's live data. Compare its readings to the expected values for your vehicle at idle and under light acceleration.
Step 3: If the MAP sensor readings are erratic or consistently out of range, replace the MAP sensor. If readings seem plausible but the code persists, perform a smoke test to definitively rule out vacuum leaks.