C0202 low

Cruise Control Servo Motor Circuit Malfunction

The C0202 code means the vehicle's onboard diagnostic system has detected: Cruise Control Servo Motor Circuit Malfunction. This is a low severity code.

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Keep driving?: Yes, but fix soon
DIY difficulty: moderate
Estimated cost: $100 - $500 (parts and labor)

Read ABS Codes

BlueDriver Bluetooth Pro Scanner

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Read ABS Codes

LAUNCH CRP123X (Reads ABS + Chassis)

Basic scanners cannot read ABS codes. This one reads all four systems so you know exactly which sensor failed.

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Common Symptoms

Cruise control will not engage
Cruise control drops out intermittently
Vehicle speed fluctuates with cruise on
Cruise control warning light on
Set speed cannot be maintained

Probable Causes (Ranked by Likelihood)

Failed cruise control servo or actuator Very High
Vacuum leak in cruise control system High
Faulty cruise control switch on steering wheel Moderate
Cruise control module failure Low

Step-by-Step Diagnostic Procedure

Scan cruise control module for DTCs
Test cruise control switches on steering wheel
Check vacuum hose to cruise servo for leaks
Test servo operation with scan tool
Verify brake switch properly disengages cruise

Frequently Asked Questions

Is the cruise control servo the same as the throttle body?

On older vehicles, the cruise control servo is a separate vacuum-operated unit that controls the throttle cable. On newer drive-by-wire vehicles, cruise control uses the electronic throttle body directly.

Why does cruise control cut out on hills?

If cruise control cannot maintain the set speed within a certain range, it may disengage. This can indicate a weak servo or a vehicle that is underpowered for the grade.

Can a brake light switch cause cruise control failure?

Yes. The brake light switch signals the cruise control to disengage. If the switch is faulty and sends a constant brake signal, cruise control will not engage or will immediately drop out.