P0611

Fuel Injector Control Module Performance

Fuel injection control module Generic OBD-II High

What it means

P0611 means the ECM has detected that the fuel injector control module (FICM) — the dedicated driver that fires the injectors, common on diesels — isn't performing as expected. Because it directly controls fueling, the result can be misfires, rough running, reduced power, or hard/no-starting. Voltage and connection problems are a frequent trigger before the module itself has failed.

High

Can I keep driving? Risky — the module that drives the injectors isn't performing correctly, which can cause misfires, rough running, hard starting, or a no-start (common on diesels). Diagnose before driving far.

Real-world scan data

Seen in

639

scans in the past year

Found in

0.1%

of scans

0.2%

of scans that found faults

Appears alongside · share of P0611 scans

P0401in 65.4% of scans

P0402in 64.6% of scans

P229Ein 64.5% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Rough idle, misfire, or stalling
Reduced power or limp mode
Hard starting or no-start

Common causes

Most likely first

Poor power or ground supply to the fuel injector control module (FICM)Likely
Corroded or loose module connectorsCommon
Damaged wiring between the FICM and ECM or injectorsCommon
Low or unstable battery/charging voltageLess often
Internal FICM faultLess often

How to diagnose & fix

Work through it in order

Check battery and charging voltage and the module's power/ground supply first — the FICM is voltage-sensitive.
Inspect the FICM and injector connectors for corrosion, moisture, or bent pins; clean and reseat.
Scan for injector-circuit or voltage codes that point to the underlying cause.
Test FICM output/supply against the manufacturer's spec where available.
Replace and program the FICM only after wiring, grounds, and voltage check out. Note the FICM is a separate module from the main ECM on most vehicles.

FAQ

Quick answers

Is it safe to drive with P0611?+

Not really. A misbehaving injector control module can cause misfires, stalling, or a no-start, so keep trips short until it's diagnosed.

Can I just clear P0611?+

It may clear, but returns if the module or its power supply is genuinely faulty. Check voltage and grounds, then the module itself.

Read & clear P0611 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX