Code
P1367
PEUGEOT
P — Powertrain
Ignition coil 2 control spark time
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UK: 1
EN: 5
RU: 1
AI status
Completed
Completed
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Causes
- Faulty ignition coil (coil 2)
- Damaged or corroded wiring or connector for coil 2
- Open or short in the coil primary or secondary circuit
- Poor power supply or ground to the coil (battery feed, grounding point)
- Faulty spark plug or plug boot on cylinder 2
- Intermittent connector contact due to vibration or corrosion
Symptoms
- Check Engine Light (malfunction indicator lamp) illuminated
- Rough idle or intermittent misfire, especially cylinder 2
- Reduced engine power or hesitation under load
- Poor fuel economy and increased emissions
- Engine may be hard to start or may stumble during acceleration
- Intermittent faults that may clear and return
What to check
- Read stored/freeze-frame data and live engine parameters with a scan tool; note misfire counts and whether cylinder 2 shows issues
- Check for related DTCs (misfire codes P0302, cam/crank sensor codes, power supply/ground codes)
- Visually inspect coil 2, the plug, boot, and wiring harness for damage, corrosion, or loose connectors
- Measure battery voltage at the coil connector with ignition on and during cranking
- Measure coil primary and secondary resistance and compare to manufacturer spec
- Swap coil 2 with a known-good coil (if identical) to see if the code and symptoms follow the coil
Signal parameters
- Primary coil resistance (typical modern pencil coils): ~0.5–3 Ω (model-specific—refer to factory specs)
- Secondary coil resistance: typically several kΩ (commonly ~5–20 kΩ depending on coil design)
- Expected control signal: ECU switches coil primary to ground; dwell (primary pulse) varies with RPM and load—common idle dwell on many systems is on the order of a few milliseconds
- Battery feed to coil should be near battery voltage with ignition on (approx. 12 V) with minimal voltage drop during cranking
- Oscilloscope: clean square/rectangular primary switching pulses with predictable dwell and rapid collapse; excessive noise, missing pulses, or abnormal dwell lengths indicate faults
Diagnostic algorithm
- Retrieve code(s) and freeze-frame data. Note operating conditions when stored (engine speed, load, temperature).
- Inspect coil 2, spark plug and boot for carbon tracking, damage or fouling. Replace plug if worn or damaged.
- Visually inspect wiring and connector for coil 2. Repair any damaged insulation, bent pins, or corrosion. Ensure secure connector fit.
- With ignition off, measure primary and secondary coil resistances at coil 2 and compare to factory values. If out of range, replace coil.
- Check supply voltage and ground at the coil connector with ignition on and during cranking. Repair any supply or ground faults.
- If resistances and supply are OK, swap coil 2 with another identical cylinder coil. If the fault follows the coil, replace the coil.
- If the fault remains on cylinder 2 after swapping, check wiring continuity between the coil connector and the ECU, and inspect for shorts to ground or battery.
- Use an oscilloscope on the coil primary to verify ECU drive waveform (presence, duration/dwell, frequency). Note any missing or irregular pulses.
- Check camshaft and crankshaft position sensors and mechanical timing if spark timing appears inconsistent. Repair as necessary.
- If wiring and sensors are good but the ECU output waveform is incorrect, consider ECU driver fault or software update—confirm with manufacturer procedures before replacing ECU.
- Clear codes and perform a test drive to confirm repair. Re-scan to ensure no reoccurrence.
Likely causes
- High resistance at the coil connector (corrosion or bent pins)
- Internal short or high resistance inside coil 2
- Loose or damaged ground or battery feed to the coil circuit
- Intermittent wiring short to ground or to battery
- Faulty cam or crank sensor producing incorrect timing input to ECU
Fault status
Status
ECU detected abnormal spark timing/control on ignition coil 2 (out-of-range dwell or missing driver signal). Indicates a problem in the coil circuit, coil unit, timing input, or ECU driver.
Repair difficulty: Medium
Diagnostic time: 1.5 - 4.0 hours
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