How to Fix Diagnostic Code P1350

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šŸšØ Diagnostic Profile

Vehicle Make: Chrysler

Description: Ignition Control System fault. Applies to ignition control circuit, ignition coil driver, crank and cam position sensor inputs, and related PCM-controlled spark events. This diagnostic procedure applies generally across Chrysler, Dodge, Jeep, and RAM platforms using coil-on-plug (COP) or coil-near-plug ignition systems; exact connector locations and torque specs should be confirmed against the specific model-year service manual before final repair.

šŸšØ Repair Difficulty Tier

Tier: Intermediate

Diagnosis requires scan tool data review, live data monitoring, and electrical circuit testing. Repairs are typically component replacement or wiring repair with proper verification. A mid-level scan tool capable of bidirectional controls and waveform capture (or lab scope) is recommended for full confirmation.

šŸ› ļø Resolution Steps

Step 1: Preliminary Inspection

  • Verify battery state of charge (should read approximately 12.4Vā€“12.6V at rest) and confirm charging system output is within the typical 13.5Vā€“14.7V range at idle using a digital multimeter.
  • Scan all modules for stored and pending DTCs and record freeze frame data, noting misfire counters by cylinder if a P030X code is present alongside the ignition control fault.
  • Visually inspect ignition coil connectors, harness routing, and chassis/engine ground points for corrosion, pin push-out, or chafing against the engine block, valve cover, or exhaust manifold.
  • Check for oil leaks (valve cover gasket seepage), coolant contamination, or moisture intrusion in the coil boots and spark plug wells, as this is a common root cause of ignition control faults on COP systems.
  • Inspect crankshaft and camshaft position sensor wiring and connectors for damage, corrosion, or heat-related insulation breakdown near the sensor mounting location.
  • Confirm spark plug condition, gap, and heat range match the factory specification listed on the underhood emissions (VECI) label or OEM service data for the confirmed engine.

Step 2: Diagnostic Verification

  • Monitor ignition coil command signals and misfire counters with a scan tool during cranking and idle, comparing cylinder-to-cylinder misfire activity to isolate a single-cylinder versus multi-cylinder/system-wide fault.
  • Perform a voltage drop test on the ignition coil power feed and ground circuits with the engine running or cranking; a healthy circuit should read less than 0.2V drop across any single connection or ground point.
  • Test crankshaft and camshaft sensor signal waveforms with an oscilloscope, verifying a clean, consistent square or sine wave pattern (depending on sensor type ā€” Hall-effect or variable reluctance) without dropout, noise, or signal degradation at varying RPM.
  • Check ignition coil primary and secondary resistance (if applicable to coil design) against OEM-published specification using an ohmmeter; most COP coils on Chrysler products do not have serviceable resistance specs and are tested via substitution or waveform analysis instead.
  • Verify PCM 5V reference voltage and sensor ground integrity at the crank/cam sensor circuits using a digital multimeter back-probed at the connector, confirming stable reference voltage with no significant drop under load.
  • Isolate the fault to a specific component, circuit, or module (coil, sensor, wiring harness, or PCM driver) through component swapping, circuit testing, or PCM output command verification before replacing parts.

Step 3: Resolution & Reset Process

  • Repair or replace the confirmed faulty component or wiring using OEM-equivalent connectors, proper gauge wire, and factory-style splicing or soldering techniques with heat-shrink protection; avoid uninsulated crimp-only butt connectors in engine bay environments.
  • Clear all stored DTCs using a compatible scan tool after repairs are completed.
  • Perform any required crank/cam sensor relearn, variant learn, or PCM idle/fuel trim relearn procedure per the vehicle-specific service routine if a sensor or PCM-adjacent component was replaced; some Chrysler platforms require a scan-tool-initiated “crank sensor variation learn” after replacement.
  • Road test the vehicle under load and RPM/throttle conditions that previously set the fault, monitoring live misfire data and ignition timing in real time if possible.
  • Re-scan all modules to confirm no pending or stored codes remain and document final live data, including coil command signals and sensor waveforms, for the repair record.

šŸ“¦ Parts, Labor, and Budget Estimates

Required Components/Software:

  • OEM or OEM-equivalent ignition coil(s) ā€” coil-on-plug or coil-near-plug style depending on engine configuration
  • Crankshaft or camshaft position sensor (if confirmed faulty by waveform/resistance testing)
  • Weather-pack style wiring repair kit with OEM-spec terminals (if harness damage is confirmed)
  • Spark plug set matching factory heat range and gap specification
  • Scan tool with bidirectional control capability and/or dealer-level diagnostic software (e.g., Chrysler wiTECH or equivalent aftermarket scan platform) for relearn procedures

Average Component Price:

  • Ignition Coil (each): $35ā€“$90 (aftermarket); $80ā€“$160 (OEM Mopar)
  • Crank or Cam Position Sensor: $40ā€“$120 depending on sensor type and accessibility
  • Wiring Repair Materials (connector, pigtail, terminals, loom): $25ā€“$120 depending on repair scope
  • Spark Plugs (Full Set, 4ā€“8 cylinders): $40ā€“$150 depending on plug type (copper, platinum, iridium) and cylinder count
  • wiTECH Subscription / Dealer Programming Access (if relearn requires factory software): $45ā€“$95 for short-term diagnostic access, or dealer programming fee $100ā€“$200 flat if outsourced

Estimated Labor Hours:

  • Diagnostic Time: 0.8ā€“1.5 hours (scan, live data review, circuit/waveform testing)
  • Component Replacement Time: 0.3ā€“0.5 hours per coil; 0.5ā€“1.5 hours for crank/cam sensor depending on accessibility (some cam sensors are accessed through the timing cover and may require significantly more labor); 0.5ā€“1.0 hour for wiring harness repair
  • Reset and Verification Time: 0.3ā€“0.6 hours including DTC clear, relearn procedure, and road test confirmation