P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High

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

SCHEDULE P2103 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2103 code

P2103 is a diagnostic trouble code (DTC) for "Throttle Actuator Control Motor Circuit High". 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 P2103 DIAGNOSTIC Get a fair and transparent estimate upfront

diagnostic check engine light

P2103 code definition

The P2103 code is a generic powertrain code related to the fuel or air metering system, including the mass air flow sensor. In this case, the engine control module (ECM) has detected a fault with the throttle actuator control motor circuit. Other control modules, including the transmission control module and body control module, may also store this code.

Codes related to the P2103 include:

What the P2103 code means

A sensor on the accelerator pedal arm sends a voltage signal to the ECM (or related control module), which then commands the throttle body to open or close. Voltage signals sent from the ECM will activate the throttle actuator motor in the direction required by changing voltage levels and polarity. Then, as the throttle actuator motor turns, a gear in the throttle body turns and is meshed with a larger gear. The change in ratio allows the throttle plate to open quickly or slowly as needed.

A code P2103 will be stored when the ECM or other control module detects an error or fault with the throttle actuator control motor circuit. Some vehicle makes and models may require multiple drive cycles with a failure detected before the service engine light is illuminated.

Note, a P2103 code only applies to vehicles with an electronically controlled throttle body, also referred to as drive-by-wire throttle bodies.

What causes the P2103 code?

Several problems may cause a P2103 code including:

  • Damaged or defective throttle actuator control motor
  • Damaged or defective throttle position actuator
  • Damaged or defective throttle position sensor
  • Damaged or defective pedal position sensor
  • Damaged, corroded, open, or shorted wiring and related connectors in throttle actuator motor or CAN bus harness
  • Loose control module ground strap
  • Broken ground wire

What are the symptoms of the P2103 code?

Symptoms of a P2103 code may include:

How does a mechanic diagnose the P2103 code?

A mechanic may use several methods to diagnose a P2103 trouble code, including: * Utilize an OBD-II scanner to check for a stored P2103 trouble code * Visually inspect wiring and related electrical components for signs of damage or corrosion * Test throttle actuator control module connector voltage and ground signals while the motor is activated * Test each individual circuit if no voltage and ground signals are present to pinpoint the location of the fault * Check CAN bus for loose, damaged or corroded electrical connections

Common mistakes when diagnosing the P2103 code

It is recommended to always diagnose and troubleshoot diagnostic trouble codes in the order in which they appear, as codes further down the list may simply be a symptom of a code higher up.

How serious is the P2103 code?

Because a vehicle’s safe driving operation most likely will be impacted due to faults that store a P2103 code, this code is considered a potentially serious code. When this code appears, it is recommended to immediately take your vehicle to your local service center or mechanic for repair and diagnosis.

What repairs can fix the P2103 code?

Several repairs can fix a P2103 trouble code and include:

  • Replace or repair damaged or defective wiring and related electrical components
  • Replace damaged or defective throttle position sensor
  • Replace damaged or defective throttle body
  • Replace damaged or defective pedal sensor
  • Clear all codes, test-drive the vehicle, and rescan to see if any codes reappear

Additional information related to a P2103 code

Due to the number of possible places a fault can occur, it is recommended to have the testing of the electrical system and any repairs related to the CAN bus handled by a professional to avoid causing additional damage.

Need help with a P2103 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.

trouble codes
OBD-II
P2103

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

SCHEDULE P2103 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

3,484

Rating Summary
3,176
153
40
23
92
3,176
153
40
23
92

Richard

10 years of experience
415 reviews
Richard
10 years of experience
This is the second time I’ve had Richard work on my car. He always does an outstanding job and is quick, knowledgeable and professional. Highly recommended!!
2012 DODGE CHALLENGER - CHECK ENGINE LIGHT IS ON - LAS VEGAS, NEVADA

Michael

13 years of experience
372 reviews
Michael
13 years of experience
Mike was an absolute professional when he arrived. He walked me thru the whole process of my repairs and also made good recommendations for preventive issues. His mechanical knowledge and good customer services was a breath of air and greatly appreciated :-)
2007 CHEVROLET AVALANCHE - CHECK ENGINE LIGHT IS ON INSPECTION - MARIETTA, GEORGIA

Rodrigo

10 years of experience
85 reviews
Rodrigo
10 years of experience
Rodrigo was exactly on time, very professional and friendly. He assessed my car, let me know the exact problem when a previous mechanic from a shop in my area was unable to. I felt he was very honest and sincere letting me know the level of urgency that I deal with the issue. Absolutely no pressure. I will absolutely use Rodrigo the next time I need anything to do with my car and will tell everyone about him. This is such a great service, I will never go to another mechanic again. It is so convenient. I couldn’t be happier. :)
2013 SMART FORTWO - CHECK ENGINE LIGHT IS ON - LAS VEGAS, NEVADA

Ricardo

8 years of experience
223 reviews
Ricardo
8 years of experience
Great service and was very helpful on what maintenance my vehicle needed and what to expect in the future. Would definitely recommend to anyone and will.
2004 MITSUBISHI LANCER - CHECK ENGINE LIGHT IS ON - LOS ANGELES, CALIFORNIA

More related articles

P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222...
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...

Related questions

Q: My car is showing code P1445

Hi Emily. This is one of the common codes associated with the secondary air injection system on that particular Toyota engine. One of the valves may have failed or has contamination inside. The secondary air injection system is an emission...

Q: ABS light on dash board

Hello. Since this could be a variety of potential issues, I would recommend hooking the car up to an OBD scanner to download any trouble codes that may have registered as a result of the light coming on. I would...

Q: I am getting the P200A check engine light

The trouble code that you have listed is associated with a known problem for the intake manifold runner control system. There are some 2011 and 2012 model year vehicles that have a current recall to have the control module reprogrammed...

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