P2102 Code: Throttle Actuator “A” Control Motor Circuit Low

Have you encountered a P2102 code on your scanner tool? This code is a diagnostic trouble code (DTC) that indicates an issue with your vehicle. Resolving a P2102 code requires a certain level of auto knowledge. If you’re planning to fix your vehicle, we recommend reading the rest of this article to get a better understanding of the P2102 code.

What Does the P2102 Code Mean?

P2102 stands for “Throttle Actuator ‘A’ Control Motor Circuit Low.” It’s a generic powertrain code for vehicles with electric throttle actuators in their engines. This code frequently appears in some Ford and Nissan models.

The vehicle’s powertrain control module (PCM) can store a P2102 code if it detects an electrical issue in the throttle actuator “A” circuit. Normally, the PCM receives voltage signals from coolant temp, intake air temp, engine rpm, and air conditioning system pressure sensors to operate the throttle actuator “A.” A problem that triggers this code can lead to low power and engine damage. The PCM cannot fully compensate for this electrical failure.

If left unaddressed, the issues that set a P2102 code can cause more problems for your vehicle. You must address these problems immediately to prevent expensive part replacements and repairs down the line.

Note: The definition of code P2102 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P2102 Code?

Some issues can trigger a P2102 code. Here are their most frequent causes.

• The throttle actuator “A” circuit is opened or shorted
• Faulty throttle actuator
• Defective PCM

What are the Common Symptoms of the P2102 Code?

A P2102 code can be accompanied by other DTCs like P2100, P2101, and P2103. If you notice some symptoms not listed here, your PCM might have more than one DTC stored. Here are some common symptoms of the problems that set a P2102 code.

• Illuminated check engine light
• Fixed idle speed
• Unable to accelerate engine

How to Diagnose the P2102 Code

The following video can be used as reference when diagnosing this code, but you still have to do some research because your vehicle might have different diagnostic steps. Some components might have different names and locations depending on the vehicle’s make, model, and powertrain. Make sure to consult your vehicle’s repair manual before attempting any diagnosis or repairs. For instance, the specific steps to resolve a P2102 code for an Audi might not be the same for a Ford.

How to Fix the P2102 Code

There’s no single solution for resolving a P2102 code. You’ll have to identify the root causes of this code to come up with the right fix. There will be times when you’ll need to replace a single part and times when you’ll need to overhaul an entire circuit. It all depends on the severity of the issue. We recommend looking up technical service bulletins that are related to your vehicle’s problems to speed up your research. Chilton has repair manuals that can help you identify the names and locations of parts in your vehicle. ALLDATA offers a subscription service that supplies specific information about your vehicle.

It isn’t simple to troubleshoot DTCs. If you lack the necessary abilities and knowledge, P2102 code repairs might be best left to a qualified mechanic.