When C1116 appears, the control module has detected abnormal behavior related to Starter Motor Circuit Failure in ABS/chassis dynamics and brake control.
C1116 Code: Meaning, Symptoms, Causes & Fix
Overview
Symptoms
- ABS/traction light on
- longer braking intervention
- reduced stability control performance
Common causes
- Broken terminal inside harness affecting starter motor circuit failure
- Open circuit in wiring
- Connector pin damage/corrosion or harness stress near related components
How to diagnose C1116
- Confirm C1116 and capture freeze-frame data with a professional scan tool.
- Inspect wiring, connectors, and grounds related to starter motor circuit failure for obvious defects.
- Use a continuity test from module pin to component to identify opens/high resistance.
- Check for related DTCs to identify the root-cause chain before replacing parts.
- After repair, clear codes and confirm readiness monitors complete without recurrence.
Severity of code C1116
Moderate: This code is moderate severity: the vehicle may still operate, but fault progression can increase repair cost over time.
Can you drive with C1116?
Most vehicles can be driven short-term with C1116, but postpone heavy load/highway driving until repaired.
If the warning lamp is flashing or drivability/safety is affected, avoid driving and diagnose immediately.
How to fix it (step-by-step)
- Repair obvious wiring/connector faults first to prevent repeat parts replacement.
- Address the root fault mode (open) in the starter motor circuit failure circuit/system.
- Apply the required relearn/adaptation procedure if specified by service information.
- Road-test and verify C1116 remains cleared under the conditions that originally set the code.
Fix options
- Repair open circuit and secure connector lock.
- Restore continuity and verify pin tension.
- Clear DTCs and verify with live data and completed drive cycle.
Typical repair cost
$240-$1200
Common mistakes when diagnosing C1116
- Replacing parts without verifying voltage, ground, and signal integrity first.
- Ignoring related stored/pending codes that indicate upstream faults.
- Skipping post-repair verification drive cycle and readiness checks.
C1116 in common vehicles
C1116 appears across makes such as Mazda, Subaru, Lexus, Jeep. Failure patterns differ by platform: wiring routes, software calibration, and component supplier revisions can change root cause.
Frequently asked questions
What causes C1116?
C1116 is commonly set by open faults affecting starter motor circuit failure.
How much does it cost to fix C1116?
For C1116, repair costs are typically $240-$1200 depending on exact root cause, labor rates, and part quality.
Can I clear C1116 without repair?
You can clear C1116 temporarily, but the code usually returns until the underlying fault is corrected.