P0950 moderate

Autoshifting Manual Transmission (ASM) Control Circuit

The P0950 code means the vehicle's onboard diagnostic system has detected: Autoshifting Manual Transmission (ASM) Control Circuit. This is a moderate severity code.

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Keep driving?: Short distances only
DIY difficulty: hard
Estimated cost: $200 - $1,200 (parts and labor)

Check Your Fluid First

ANCEL AD310 OBD-II Scanner

Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.

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Read Transmission Codes

LAUNCH CRP123X (Reads All Systems)

Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.

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Common Symptoms

Check Engine Light illuminated
Automated shifting not functioning properly
Harsh or delayed gear changes
Transmission may default to a single gear

Probable Causes (Ranked by Likelihood)

Faulty ASM control module Very High
Wiring fault in ASM control circuit High
Communication error between ASM module and ECM Moderate
Software calibration issue in ASM module Low

Step-by-Step Diagnostic Procedure

Scan for all DTCs in the ASM module and ECM
Check communication between the ASM module and other modules
Inspect ASM control module connector and wiring for damage
Verify ASM module software version and update if applicable

Frequently Asked Questions

What is an autoshifting manual transmission?

An ASM transmission is essentially a manual gearbox with automated clutch and shift actuators controlled by an electronic module. It provides automatic-like convenience with manual transmission efficiency.

Can a software update fix P0950?

In some cases, a software recalibration or update to the ASM module can resolve control circuit issues. Check with your dealer for applicable updates.

Are ASM transmissions reliable?

ASM transmissions have a mixed reputation for reliability. Regular maintenance of the clutch and actuator systems is essential. Many issues can be prevented with proper servicing.