P1368

Code

PEUGEOT P — Powertrain

Ignition coil 3 control spark time

Brand: PEUGEOT

Type: P — Powertrain

Views: UK: 15 EN: 24 RU: 20

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Page language: EN

Open or short in wiring to ignition coil 3 (power, ground or driver circuit)
Faulty ignition coil (coil-on-plug or coil pack) for cylinder 3
Poor connector contact, corrosion or water ingress at coil connector
Faulty ECU/ignition driver transistor controlling coil 3
Incorrect camshaft/crankshaft position or timing (sensors or timing belt/chain issue)
Intermittent high resistance or PCB fault in coil pack

Read freeze-frame data and live PID values; note misfire counts and engine speed when code set
Scan for stored and pending DTCs (related misfire, cam/crank sensor, or coil circuit codes)
Visual inspection of coil 3, connector, wiring harness, and spark plug condition
Check for presence of +12V supply and good ground at coil connector with ignition ON
Measure coil primary and secondary resistance (compare to factory specs)
Swap coil 3 with another cylinder's coil to see if the fault follows the coil

Coil primary supply: battery voltage (~11–14 V with ignition ON) to coil power pin
Coil primary resistance (typical range for many modern COP coils): ~0.4–2.0 Ω (consult factory spec)
Coil secondary resistance: often in the kilo-ohm range (typical ~5 kΩ–15 kΩ; consult factory spec)
Driver command: ECU switches coil primary to ground; primary waveform shows dwell then rapid collapse (use oscilloscope)
Dwell time and timing angle vary with RPM/load — verify against manufacturer live-data values

Capture freeze-frame and note engine conditions when code set. Record any associated codes (misfire, P0353, cam/crank codes).
Visually inspect coil 3, spark plug, boot and connector for damage, oil or corrosion. Repair connectors as needed.
With ignition ON, verify battery voltage at coil power terminal and continuity to ECU power supply fuse/relay.
Backprobe coil connector to confirm ECU driver/ground switching when cranking and while running (use scope or DVOM with care).
Measure coil primary and secondary resistances and compare to factory values. If out of range, replace coil.
Swap coil 3 with another cylinder. If code/misfire follows coil, replace the coil. If it stays on cylinder 3, suspect wiring or ECU.
Use an oscilloscope to examine primary and secondary waveforms for correct dwell, spark energy and signs of shorted turns or saturation.
If waveforms show correct driver pulses but timing still incorrect, check camshaft/crankshaft position sensors and timing chain/belt alignment.
Inspect wiring harness for shorts/opens, repair damaged wiring, and check grounds for resistance and corrosion.
If wiring and coil are good and problem persists, consider ECU ignition driver failure and consult manufacturer guidance for ECU testing/replacement.
Clear codes and perform a road test to confirm repair; re-scan for reappearance of P1368 and related codes.

⚠️ Status

ECU reports abnormal spark control/timing for ignition coil (cylinder) 3 — ignition event not matching commanded timing.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1-3 hours (depending on tests required and accessibility)

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P1368 — Ignition coil 3 control spark time