If your scan tool displays C0907, one of your vehicle’s electronic chassis control modules has detected that an actuator or electrically controlled device is drawing less current than expected. Unlike C0906 (Device Current Circuit), which indicates a general fault within the actuator circuit, C0907 specifically identifies insufficient current flow. This usually means the actuator is not receiving enough electrical power to operate correctly or an open circuit is preventing normal operation.

On many GM vehicles, C0907 is commonly stored by the Electronic Brake Control Module (EBCM), Transfer Case Control Module (TCCM), Electronic Suspension Control Module (ESCM), or Electronic Power Steering Module (EPS) when the measured current falls below the module’s calibrated operating range.

In most cases, C0907 is caused by open wiring, excessive circuit resistance, loose or corroded connectors, weak battery voltage, faulty relays, blown fuses, or an internally failing actuator—not a defective control module.

For additional chassis diagnostic guides, visit our Complete OBD-II Trouble Code Library:

https://my.prostreetonline.com/dtc-obdii

Quick Facts

Item	Information
OBD-II Code	C0907
Description	Device Current Circuit Low
Category	Chassis (C) Codes
System	Chassis Electronics / Actuator Circuit
Severity	★★★★☆ High
Safe to Drive?	Usually, but affected safety systems may be disabled
Common Causes	Open circuit, high resistance, weak battery, faulty relay, blown fuse, failing actuator
Typical Repair Cost	$75–1,200

What Does C0907 Mean?

The C0907 code indicates that a chassis control module has detected lower-than-expected current flow while attempting to operate an electronic actuator.

Modern chassis control modules continuously monitor not only voltage but also current consumption to verify that actuators are functioning correctly.

If the measured current is below the programmed threshold, the module stores C0907.

Unlike:

C0905 – Device Current Performance
C0906 – Device Current Circuit

C0907 specifically means the actuator is receiving too little current to operate properly.

This commonly results from:

Open wiring
High circuit resistance
Weak electrical supply
Failing actuator windings
Poor ground connections
Loose connectors

Depending on the vehicle, monitored devices may include:

ABS pump motor
Transfer case shift motor
Front axle actuator
Electronic parking brake motor
Adaptive suspension compressor
Air suspension solenoids
Electronic steering assist motor
Differential locking actuator
Active suspension dampers

If current falls below specification, the module may disable the affected chassis system to prevent unreliable operation.

Symptoms of C0907

Common symptoms include:

ABS warning light
Traction Control warning
StabiliTrak warning
Service 4WD message
Electronic parking brake warning
Suspension warning light
Stored C0907 diagnostic code

Additional symptoms may include:

Slow actuator movement
Actuator fails to operate
Four-wheel drive will not engage
Suspension remains fixed
Steering assist becomes intermittent
Clicking relays
Multiple chassis warning lights
Communication-related DTCs

Symptoms vary depending on which actuator is affected.

Common Causes

Open Circuit

The most common cause of C0907 is an open electrical circuit.

Possible failures include:

Broken wiring
Disconnected connectors
Damaged terminals
Broken internal conductors

Open circuits prevent sufficient current from reaching the actuator.

High Resistance

Electrical resistance reduces available current.

Common sources include:

Corroded wiring
Loose terminals
Oxidized connectors
Partially broken wires

High resistance may allow some operation while still triggering C0907.

Weak Battery

Low battery voltage reduces current available to actuator motors.

Symptoms often worsen:

During cold weather
After extended parking
During heavy electrical loads

Always load-test the battery before replacing components.

Blown Fuse

Many actuators receive power through dedicated fuses.

A blown fuse immediately interrupts current flow.

Always determine the reason the fuse failed before installing another.

Faulty Relay

Burned relay contacts can restrict current reaching the actuator.

Common relay failures include:

High contact resistance
Burned contacts
Weak internal coil
Intermittent switching

Poor Ground Connection

An actuator cannot draw proper current without a low-resistance ground.

Inspect:

Battery grounds
Engine grounds
Chassis grounds
Module grounds

Voltage-drop testing is the most effective diagnostic method.

Failed Actuator Motor

Electric motors often develop:

Open windings
Worn brushes
Broken commutators
Internal electrical damage

These failures significantly reduce current draw.

Damaged Wiring Harness

Inspect for:

Pinched wiring
Heat damage
Chafed insulation
Rodent damage
Water intrusion

Harness damage frequently causes intermittent low-current conditions.

Faulty Control Module

Although possible, internal driver failures are relatively uncommon.

Control modules should only be replaced after external circuits have been thoroughly tested.

How Serious Is C0907?

High.

Although the vehicle often remains drivable, one or more important electronic chassis systems may stop functioning.

Possible consequences include:

Disabled ABS
Disabled Traction Control
Disabled Stability Control
Four-wheel drive unavailable
Suspension system faults
Electronic parking brake problems

Ignoring the problem may eventually result in complete actuator failure.

Can You Drive With C0907?

Usually, yes—but repairs should not be delayed.

Depending on which actuator is affected, the vehicle may lose:

Anti-lock braking
Electronic stability control
Four-wheel drive capability
Adaptive suspension operation
Parking brake assistance

Vehicle handling may be compromised under slippery or emergency driving conditions.

How to Diagnose C0907

1. Scan All Modules

Check for additional:

ABS codes
Transfer case codes
Suspension codes
Communication faults
Battery voltage codes

Additional DTCs often identify the affected actuator.

2. Command the Actuator

Using a professional scan tool:

Activate the actuator.
Listen for operation.
Observe movement.
Monitor live current data if available.

Little or no movement usually indicates insufficient current.

3. Measure Current Draw

Use a clamp-on ammeter to measure actuator current.

Compare readings to manufacturer specifications.

Current significantly below specification usually confirms the fault.

4. Inspect Power and Ground

Using a multimeter:

Verify battery voltage reaches the actuator.
Verify proper ground.
Perform voltage-drop testing.

Repair excessive resistance before replacing parts.

5. Inspect Wiring and Connectors

Look for:

Loose connectors
Broken wires
Corrosion
Melted insulation
Water intrusion

Repair damaged wiring as needed.

6. Test Fuses and Relays

Inspect:

Power supply fuse
Actuator relay
Relay socket terminals

Replace defective components only after identifying the underlying cause.

7. Verify Repairs

After repairs:

Clear all stored DTCs.
Operate the affected system repeatedly.
Confirm proper actuator operation.
Verify C0907 does not return.

Common Repairs

Repair	Estimated Cost
Repair damaged wiring	$100–450
Replace electrical connector	$75–250
Replace actuator motor	$250–900
Replace fuse	$25–75
Replace relay	$50–175
Repair ground connection	$75–200
Replace battery	$150–350
Replace chassis control module (if required)	$700–1,600

Common Diagnostic Mistakes

Technicians frequently:

Replace the actuator before checking power and ground.
Ignore high-resistance wiring.
Fail to perform voltage-drop testing.
Replace relays without checking connector condition.
Overlook weak batteries affecting actuator performance.
Replace the control module before verifying the actuator circuit.

Vehicles Commonly Affected

C0907 is commonly reported on:

Chevrolet Silverado 1500
Chevrolet Silverado HD
GMC Sierra 1500
GMC Sierra HD
Chevrolet Tahoe
Chevrolet Suburban
GMC Yukon
Cadillac Escalade
Chevrolet Colorado
GMC Canyon
Chevrolet Traverse
GMC Acadia
Buick Enclave
Hummer H2
Hummer H3

Similar low-current circuit faults are also found on Ford, Ram, Jeep, Toyota, Honda, Nissan, Hyundai, Kia, Subaru, Volkswagen, BMW, Mercedes-Benz, Audi, and many other vehicles equipped with electronically controlled chassis systems.

How to Prevent C0907

Reduce the likelihood of C0907 by:

Inspecting actuator wiring during routine maintenance.
Keeping connectors clean and moisture-free.
Replacing aging batteries before they weaken.
Maintaining the charging system.
Repairing damaged wiring immediately.
Inspecting ground connections annually.
Addressing slow actuator operation before complete failure occurs.

Frequently Asked Questions

What causes C0907?

The most common causes include open wiring, excessive resistance, weak battery voltage, blown fuses, faulty relays, damaged connectors, poor ground connections, or an internally failing actuator.

Is C0907 serious?

Yes.

While the vehicle usually remains drivable, electronic safety systems such as ABS, traction control, four-wheel drive, or adaptive suspension may become unavailable until repairs are completed.

Can a weak battery cause C0907?

Yes.

Insufficient battery voltage can reduce actuator current below the expected range, especially during cold starts or periods of heavy electrical demand.

Can damaged wiring trigger C0907?

Absolutely.

Broken wires, loose connectors, and corrosion are among the most common causes of low-current faults.

Will replacing the actuator fix C0907?

Only if the actuator has failed internally.

Always verify power, ground, wiring continuity, relay operation, and battery condition before replacing expensive components.

Final Thoughts

The C0907 code indicates that a chassis control module has detected lower-than-expected current flow through an actuator circuit. Unlike general current circuit faults, C0907 specifically points to insufficient electrical current caused by open wiring, excessive resistance, weak power delivery, poor grounds, or a failing actuator motor. In most cases, the problem lies in the electrical circuit rather than the control module itself.

A proper diagnosis should include measuring actuator current draw, verifying battery voltage, performing voltage-drop testing, inspecting wiring and connectors, and testing relays and fuses before replacing any major components. Correcting the underlying electrical fault will usually restore normal operation and prevent the C0907 code from returning.

For additional chassis and drivetrain repair guides, browse our complete OBD-II Chassis Code Library:

Complete OBD-II Code Guide: https://my.prostreetonline.com/dtc-obdii/
Chassis (B) Code Library: https://my.prostreetonline.com/dtc-doctor/b-code-obd-ii-codes/

C0905 Code Explained – Device Current Performance
C0906 Code Explained – Device Current Circuit
C0900 Code Explained –

C0907 Code Explained: Causes, Symptoms & Device Current Circuit Low Fixes