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

An OBD-II scanner displaying C0907 beside a chassis actuator with a clamp ammeter showing low current, damaged wiring, a blown fuse, and illuminated ABS and 4WD warning lights.

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:

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Quick Facts

ItemInformation
OBD-II CodeC0907
DescriptionDevice Current Circuit Low
CategoryChassis (C) Codes
SystemChassis Electronics / Actuator Circuit
Severity★★★★☆ High
Safe to Drive?Usually, but affected safety systems may be disabled
Common CausesOpen 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:

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

This commonly results from:

Depending on the vehicle, monitored devices may include:

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

Symptoms of C0907

Common symptoms include:

Additional symptoms may include:

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:

Open circuits prevent sufficient current from reaching the actuator.

High Resistance

Electrical resistance reduces available current.

Common sources include:

High resistance may allow some operation while still triggering C0907.

Weak Battery

Low battery voltage reduces current available to actuator motors.

Symptoms often worsen:

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:

Poor Ground Connection

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

Inspect:

Voltage-drop testing is the most effective diagnostic method.

Failed Actuator Motor

Electric motors often develop:

These failures significantly reduce current draw.

Damaged Wiring Harness

Inspect for:

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:

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:

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

How to Diagnose C0907

1. Scan All Modules

Check for additional:

Additional DTCs often identify the affected actuator.

2. Command the Actuator

Using a professional scan tool:

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:

Repair excessive resistance before replacing parts.

5. Inspect Wiring and Connectors

Look for:

Repair damaged wiring as needed.

6. Test Fuses and Relays

Inspect:

Replace defective components only after identifying the underlying cause.

7. Verify Repairs

After repairs:

Common Repairs

RepairEstimated 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:

Vehicles Commonly Affected

C0907 is commonly reported on:

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:

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:

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