P0227 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch C Circuit Low Input

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0227 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0227 code

P0227 is a diagnostic trouble code (DTC) for "Throttle/Pedal Position Sensor/Switch C Circuit Low Input". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P0227 DIAGNOSTIC Get a fair and transparent estimate upfront

Check Engine Light

P0227 code definition

Throttle/Pedal Position Sensor/Switch C Circuit Low Input

What the P0227 code means

P0227 is a generic OBD-II code indicating that the throttle/pedal position sensor/switch C circuit has a low input problem causing the sensor input to the engine control module (ECM) to be lower than the expected voltage input compared to the redundant throttle position sensor A .

What causes the P0227 code?

  • The ECM detects the sensor circuit voltage below the specified range for the sensor
  • Short to ground in the signal cable causing low voltage to the ECM
  • Open circuit in the signal cable from a break in the wire, or corrosion in connections

What are the symptoms of the P0227 code?

  • Check Engine Light and Electronic Throttle Control (ETC) Light will be illuminated
  • The throttle shuts completely during stops
  • The throttle sets to a fixed position during acceleration failure
  • Uneven idle or jerking during braking due to the closed throttle position
  • Acceleration is limited by very poor throttle response, or no response at all, during acceleration
  • Vehicle speed limited to 32 mph or less

How does a mechanic diagnose the P0227 code?

  • Scans codes and documents the freeze frame data in order to verify the problem

  • Clears the engine and ETC codes to verify whether the concern comes back

  • Does a visual check of the wiring and connections to the throttle body sensors to see if they are broken or cut in any way

  • Disconnects connection to the sensors and checks for corrosion or problems with pin engagement

  • Checks scan data to see if sensor signal voltage is open, and follows pinpoint testing steps to find the open circuit

  • Checks and verifies the sensor resistance, and compares it to vehicle specifications

Common mistakes when diagnosing the P0227 code?

Follow these simple guidelines to prevent misdiagnosis:

  • Do a visual check of connections to the sensor to make sure they are making good contact to the throttle control assembly

  • Look for any problems with burnt or cut wiring to the sensor, or corrosion in the connections.

How serious is the P0227 code?

  • Any problems with the throttle sensor can cause the limp mode to be activated
  • The engine will go into limp home mode and systems will be limited
  • The vehicle speed will be limited to less than 35 mph
  • The engine will lack acceleration or have limited acceleration
  • The engine idle will be low and erratic when coming to a stop

What repairs can fix the P0227 code?

  • Repairing or replacing a defective connector or wiring to the sensor if it is corroded or has connector damage

  • Repairing cuts or shorts in the wiring to the sensor

  • Replacing the throttle body control assembly if defective

  • Replacing or reprogramming the ECM if directed by the pinpoint tests

Additional comments for consideration regarding the P0227 code

The code P0227 is triggered when the signal getting to the ECM is lower than specified. This can be due to corrosion or loose connections at the sensor. Cleaning the connector and using a dielectric compound to help stop any corrosion from returning is recommended.

Need help with a P0227 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

P0227
Check Engine Light
trouble codes

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0227 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,636

Rating Summary
3,315
161
42
24
94
3,315
161
42
24
94

Chet

38 years of experience
393 reviews
Chet
38 years of experience
Chet has been servicing my car for a couple of times now. I have a problem with my "service engine soon" that keeps coming on. Chet has my car working much better now and he has come back to "fix the problem with the engine light on again and see what else it may require." He fixed some other things I needed, but the light remains on still. He said and assured me that if anything goes bad I can phone him. My runs a lot better, but these darn cars! Who knows! I know my car will require more things down the line after the holidays, so I am paying attention to the signs... Thank you!
2001 BMW 325XI - CHECK ENGINE LIGHT IS ON - SAN DIEGO, CALIFORNIA

Peter

40 years of experience
1059 reviews
Peter
40 years of experience
Peter is the only mechanic I feel comfortable using. In this world of the "fast buck", Peter makes me feel like my car will be fixed at a fair and reasonable price without any tomfoolery so to speak. I would and have recommended him to friends and family members alike without hesitation. Thank you Peter and Your Mechanic.
2000 AUDI A8 QUATTRO - CHECK ENGINE LIGHT IS ON - PHOENIX, ARIZONA

TJ

23 years of experience
236 reviews
TJ
23 years of experience
Would never let anyone else work on my car . 10 plus plus
2007 FORD MUSTANG - CHECK ENGINE LIGHT IS ON - NORTH PORT, FLORIDA

Fred

14 years of experience
240 reviews
Fred
14 years of experience
He quickly diagnosed the issue and provided honest, upfront recommendations on repair. Highly recommend.
2001 FORD TAURUS - CHECK ENGINE LIGHT IS ON - HOUSTON, TEXAS

More related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....
P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance...

Related questions

Q: Start up is okay. Blue smoke, rough idle, and stalling. Cannot rev motor. (2002 Nissan Elgrand)

The blue smoke is due to oil leaking into the combustion chambers. The cause can vary from fairly easy to fix worn out valve stem oil seals to more costly faults such as leaking piston rings or head gasket failures....

Q: The Check Engine Light came on, I hooked it up to my scanner and got the code P0308 (cylinder #8 misfire).

An easy way to isolate if the ignition coil is the problem is to swap the #8 coil with another cylinder. Swap the #8 coil with the coil from the adjacent cylinder, then clear the codes. If the code remains...

Q: Can't pass smog check with Check Engine Light on

The most common reason for your Check Engine Light coming on is for random engine misfires. You may be having this problem, and may need to have the ignition diagnosed, to see what is causing the misfire. You may have...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com