Faulty fuel injector with an internal short or open coil on bank 1; Damaged or chafed wiring harness between the ECM and the bank 1 injectors; Corroded or loose electrical connector at one or more injectors; Failed injector driver inside the ECM (less common but possible); Aftermarket or incorrect injectors installed that do not match the ECM calibration; Poor engine ground connection affecting injector circuit reference voltage

DTC codes / P06xx · Computer and output circuits / P062D

P062DFuel Injector Driver Circuit Performance Bank 1

Q: What does code P062D mean?

Fuel Injector Driver Circuit Performance Bank 1. P062D means the engine control module (ECM) has detected a performance problem in the electrical driver circuit for the fuel injectors on bank 1 of the engine. The ECM monitors the current and voltage on the injector control wire and sets this code when the circuit does not behave as expected during commanded injection events.

P062D means the engine control module (ECM) has detected a performance problem in the electrical driver circuit for the fuel injectors on bank 1 of the engine. The ECM monitors the current and voltage on the injector control wire and sets this code when the circuit does not behave as expected during commanded injection events.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaComputer and output circuits

Symptoms you may notice

Illuminated check engine light, often with no other noticeable symptoms
Rough idle or misfire that may be intermittent
Reduced engine power or hesitation during acceleration
Poor fuel economy or strong fuel odor from the exhaust
Difficulty starting or stalling shortly after startup
In some cases, the engine may run normally until the fault is triggered under specific load conditions

Common causes, most likely first

Faulty fuel injector with an internal short or open coil on bank 1
Damaged or chafed wiring harness between the ECM and the bank 1 injectors
Corroded or loose electrical connector at one or more injectors
Failed injector driver inside the ECM (less common but possible)
Aftermarket or incorrect injectors installed that do not match the ECM calibration
Poor engine ground connection affecting injector circuit reference voltage

How to diagnose and fix it

Scan all modules for stored and pending codes, and record freeze-frame data to understand when the fault occurs
Inspect the bank 1 injector harness and connectors for physical damage, corrosion, or loose pins
Measure the resistance of each bank 1 injector and compare to the manufacturer's specification
Use a noid light or oscilloscope to check for proper injector pulse signals at each connector
Check for shorts to ground or power on the injector control wires with a multimeter
Verify engine ground integrity and battery voltage stability under load
If all external circuits and injectors test good, suspect the ECM and perform pinpoint tests before replacement

What the injector driver code really tells you

A P062D can be set by a single failing injector on bank 1 even though the code description sounds like a general driver fault, so always test each injector individually.
Many technicians replace the ECM prematurely when the real problem is a chafed wire in the harness near the intake manifold or valve cover.
Intermittent injector faults often appear only when the engine is hot or vibrating, so wiggle-test the harness while watching live misfire counters.
This code does not always mean the injector is electrically dead; a partially shorted coil can still fire but draw excessive current and trigger the driver performance monitor.
Aftermarket injectors with incorrect resistance or spray pattern can cause this code without any actual circuit failure, especially if the ECM calibration expects OEM specifications.

Can I keep driving with P062D?

You can usually drive the vehicle short distances to a repair shop, but avoid heavy acceleration or towing because a misfiring cylinder can overheat the catalytic converter. If the engine runs very rough or stalls repeatedly, stop driving and have it towed.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.