P062B

Internal Control Module Fuel Injector Control Performance

Control module (ECM/PCM) Generic OBD-II High

What it means

P062B means the ECM's internal self-checks found that its fuel injector control circuitry isn't performing as expected. Because the ECM drives the injectors, this can cause rough running, misfires, hard starting, or a no-start. It's often traced to poor power or ground to the module or a wiring fault overloading the drivers, but it can also mean the ECM itself is failing.

High

Can I keep driving? Risky — the ECM's internal injector control is faulting; the engine may run rough, misfire, lose power, or fail to start. Have it diagnosed before driving far.

Real-world scan data

Seen in

471

scans in the past year

Found in

0.1%

of scans

0.1%

of scans that found faults

Appears alongside · share of P062B scans

P0201in 29.5% of scans

P2263in 29.1% of scans

P0101in 28.4% 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 running or misfire
Hard starting or no-start
Reduced power or hesitation

Common causes

Most likely first

Poor ECM power or ground (weak battery, corroded terminals, bad grounds)Likely
Short or open in the fuel injector wiring loading the ECM's driversCommon
Internal ECM injector-driver failureCommon
Corrupted or outdated ECM softwareLess often

How to diagnose & fix

Work through it in order

Test the battery and check the ECM power and ground circuits.
Inspect the injector wiring and connectors for shorts that could overload the drivers.
Scan for injector-circuit codes (e.g. P0200-series) that point to a specific cylinder.
Reflash the ECM if an update is available; replace it if an internal fault is confirmed.
Clear the code and re-test to confirm the repair.

FAQ

Quick answers

Is it safe to drive with P062B?+

Not recommended. An internal injector-control fault can cause misfires or a no-start, which can also damage the catalytic converter, so get it diagnosed first.

Can I just clear P062B?+

It will return if the ECM has a real wiring, power, or internal fault. Fix the cause before clearing.

Read & clear P062B 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