P216A

Code

Generic P — Powertrain

Fuel Injector Group E Supply Voltage Circuit/Open

Brand: Generic

Type: P — Powertrain

Views: UK: 23 EN: 41 RU: 30

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Page language: EN

Causes

Blown fuse or failed power/ignition relay feeding injector group E
Open, corroded or disconnected connector(s) at injector group E harness
Damaged wiring (open, chafed, broken conductor) between fuse/relay and injector group E
Poor ground or short to ground/short to battery on injector supply circuit
Faulty injector harness or connector pins (corrosion, bent pins)
Faulty injector(s) with internal open coil (group failure)

Symptoms

Check Engine Light (MIL) on with P216A stored
Engine misfire or rough running when affected injectors are commanded
Engine may run on fewer cylinders or have reduced power
Hard starting or no-start if supply is completely lost to multiple injectors
Intermittent stalling or roughness when wiring flexed or when heated

What to check

Retrieve all stored codes and freeze-frame data with a scan tool
Visually inspect fuses and relays related to fuel injectors and EFI main power
Visually inspect injector group E wiring harness, connectors and pins for corrosion, damage, or disconnection
Back-probe the injector supply circuit with the key ON to measure supply voltage at the connector
Check PCM grounds and battery/ignition power feeds for proper connections and corrosion
Perform wiggle test on wiring while engine running/scanning to reproduce fault

Signal parameters

Key ON (engine off) — injector supply voltage ≈ battery voltage (typically ~11–14.5 V) at the injector power pin
When cranking/running — injector supply should remain stable near battery voltage without large voltage collapse
Injector coil resistance: each injector should show continuity (resistance value depends on design); an open/infinite resistance indicates failed injector coil
No short to ground on supply circuit — supply line should not read near 0 V with key ON

Diagnostic algorithm

Record freeze-frame and live-data; note conditions when code set. 2. Inspect fuses and EFI/PCM power relays; replace any blown fuses and retest. 3. Visually inspect wiring and connectors for injector group E (follow harness from fuse/relay to the injector rail); repair obvious damage. 4. With key ON (engine OFF) back-probe the injector group E supply pin at the injector connector and verify battery voltage is present. 5. If no voltage, trace upstream to the relay/fuse and measure at wiring splice/connector to find open. 6. Check for short to ground: disconnect connector and measure resistance from supply feed to ground; high resistance expected, low indicates short. 7. With PCM harness connected, monitor supply voltage while cranking/idle — watch for intermittent loss or collapse indicating poor connection or heavy draw. 8. Measure injector coil resistance for each injector in group E (with battery disconnected and connector unplugged) to confirm no open coils. 9. Wiggle harness and connectors while monitoring live-data or voltage to find intermittent faults. 10. If wiring and connectors are OK and injectors test good, consider PCM driver fault; confirm with manufacturer service info before replacing PCM. 11. After repair, clear codes and perform road test to verify the fault does not return. Note: isolate battery before performing repairs on wiring or replacing components; follow manufacturer safety procedures.

Likely causes

Blown fuse or bad relay feeding injector group E
Open or corroded connector at the injector rail or harness splice
Broken/open power feed or connector pin for group E
Damaged wiring due to heat/chafing near engine or firewall

Fault status

⚠️ Status

Fuel Injector Group E Supply Voltage Circuit/Open — PCM detected open or abnormal supply voltage to injector group E; verify power feed, connectors, wiring and injector coils.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-2.5 hours