What Does P210B Mean?
The secondary throttle actuator motor is operating outside expected parameters. The PCM detects the motor is not responding correctly to commanded positions or is moving too slowly/quickly.
Safety Warning
May cause unpredictable throttle response, sudden power loss, or limp mode activation. Creates dangerous driving conditions due to inconsistent engine power delivery.
Common Causes
35%
Binding or sticking throttle plate due to carbon buildup or mechanical damage
30%
Worn or failing throttle actuator motor with weak performance
20%
High resistance in throttle actuator motor circuit or poor connections
15%
Throttle body mechanical failure (shaft binding, spring issues)
Diagnostic Steps
1
Step 1: Remove air intake and manually check throttle plate for smooth operation and binding
2
Step 2: Inspect throttle bore for excessive carbon deposits; clean if necessary
3
Step 3: Using scan tool, monitor actual vs. desired throttle position during throttle sweep test
4
Step 4: Check all throttle actuator circuit voltage drops during operation (should be minimal)
5
Step 5: Measure throttle actuator motor current draw during operation to identify weak motor
Estimated Repair Cost
$150 - $900
Parts + labor, varies by vehicle and location
The secondary throttle actuator motor is operating outside expected parameters. The PCM detects the motor is not responding correctly to commanded positions or is moving too slowly/quickly.
The most common cause of P210B (Throttle Actuator "B" Control Motor Circuit Range/Performance) is: Binding or sticking throttle plate due to carbon buildup or mechanical damage
Typical repair costs for P210B range from $150 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause unpredictable throttle response, sudden power loss, or limp mode activation. Creates dangerous driving conditions due to inconsistent engine power delivery.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P210B to identify the root cause.
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Quick Info
Category
Powertrain
System
Electronic Throttle Control
Difficulty
Type
Generic (SAE)
Recommended Tools
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