Code
P062E
Generic
P — Powertrain
Fuel Injector Driver Circuit Performance Bank 2
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UK: 16
EN: 1,476
RU: 47
AI status
Completed
Completed
100%
Causes
- Open or shorted injector wiring harness on bank 2
- Poor or corroded connector(s) at fuel injectors or ECM
- Failed injector(s) (internal short or open)
- Faulty ECM/PCM injector driver(s)
- Intermittent ground or battery supply to ECM
- Aftermarket electrical modifications or damage
Symptoms
- Check Engine Light (MIL) illuminated
- Misfire or rough idle affecting cylinders on bank 2
- Loss of power or poor acceleration
- Degraded fuel economy
- Increased hydrocarbon emissions or failed emissions test
- Occasional intermittent engine hesitation or stalling
What to check
- Scan for stored/active trouble codes and freeze-frame data
- Compare misfire counts and fuel trim data for bank 2 vs bank 1
- Visual inspection of injector harness, connectors, and pins on bank 2
- Check battery voltage and main power/ground to ECM
- Backprobe injector connector while cranking/running to observe driver behavior
- Measure injector coil resistance for each injector on bank 2
Signal parameters
- Battery supply to ECM/power rail: ~12 V (vehicle off) to 13.5–14.5 V (engine running, charging)
- Injector driver output: switched to ground by ECM; pulsed waveform when injecting (duty cycle varies with load)
- Injector coil resistance (typical range): ~2–20 ohms depending on injector design — consult OEM spec
- Pulse frequency: varies with engine speed; pulse width typically 1–10 ms depending on load and rpm
- Open-circuit: infinite ohms; short-to-ground: near 0 ohms at harness pins (indicates short)
Diagnostic algorithm
- Read and record all codes, freeze-frame and live data (fuel trims, rpm, injector pulse width, misfire counts).
- Visually inspect wiring, harness routing and connectors for bank 2 injectors. Repair damaged wiring or connectors.
- Verify battery voltage and check ECM power and ground circuits for good connections and proper voltage.
- With ignition off, measure DC resistance of each injector on bank 2 at the harness pin; compare to spec and to bank 1 injectors.
- Backprobe injector driver signals with engine cranking/running: confirm injector drive pulses present and returning to expected voltage levels using a DVOM or oscilloscope.
- If injectors show correct coil resistance but no driver pulse, test continuity from ECM driver pin to injector connector; if short or open exists, repair wiring.
- Swap an injector (or its connector) from a known-good cylinder on the other bank to see if the fault follows the injector or remains with the bank/ECM.
- If injector driver waveform is abnormal (stuck, clipped, shorted), isolate the suspect injector by disconnecting it and observe if code/behavior changes. If disconnecting an injector clears the driver fault, suspect the injector.
- If wiring and injectors check good and fault persists, test or replace ECM according to vehicle manufacturer procedures. Follow safety procedures when replacing ECM and reprogram if required.
- Clear codes and perform road/drive cycle to verify repair. Re-scan to confirm no return of P062E.
Likely causes
- Damaged insulation or pin damage in injector harness for bank 2
- Corroded or loose injector connector(s) on bank 2
- One or more injectors on bank 2 partially shorted or open
- ECM driver transistor(s) degraded on bank 2
- Low battery voltage or poor power/ground to ECM affecting driver outputs
Fault status
Status
Fuel injector driver circuit performance fault detected on bank 2 — possible wiring, injector, or ECM driver failure.
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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