P0336 Code: Dodge Ram 1500 (2019-2024) - Causes, Symptoms & Fixes

No recalls found in NHTSA database.

No NHTSA complaints found for this make/model/year/issue combination.

This guide provides a comprehensive overview of P0336 (Crankshaft Position Sensor A Circuit Range/Performance) for 2019–2024 Dodge Ram 1500. It combines general diagnostic workmanship with Ram-specific considerations, and notes data limitations (see above).

1. CODE MEANING AND SEVERITY

• What the code means: P0336 indicates the crankshaft position sensor (CKP) signal is out of the expected range or is not within normal performance, as determined by the PCM. In practical terms, the PCM is not seeing a clean, stable CKP waveform that correlates properly with engine speed.
• Why it matters: The CKP signal is used to time fuel injection and ignition events. If the signal is erratic or out of range, the engine may stumble, misfire, stall, or fail to start. In some cases the powertrain may go into a limp or fail-safe mode to protect the engine.
• Severity: Medium to high. Depending on the failure mode, symptoms can range from rough idle and misfires to no-start conditions. Prolonged driving with a confirmed CKP range problem risks engine damage or stalling in risky situations (e.g., at highway speeds). However, most cases are resolvable with a proper sensor/wiring/PCM fault diagnosis and repair.

2. COMMON CAUSES ON DODGE RAM 1500

• Faulty crankshaft position sensor (CKP) itself.
• Damaged or corroded CKP sensor connector or wiring harness (chafed insulation, loose/dirty connector, broken pins).
• Damaged crankshaft reluctor ring or misalignment of the ring relative to the CKP sensor.
• Low or unstable electrical supply to the sensor (battery/alternator health, poor grounds, or a failing ignition supply).
• PCM/ECU software needing an update or calibration, or an intermittent PCM fault.
• Intermittent sensor or wiring faults that cause intermittent CKP readings (can produce sporadic misfires or stalling).
• Mechanical timing issues (less common as a primary cause for P0336, but a worn timing chain/belt, jumped timing, or timing cover issues can affect the CKP signal indirectly if they alter the sensor’s reference or timing accuracy).
• Aftermarket modifications or damaged heat shielding causing wiring heat/abuse near exhaust or moving components.

3. SYMPTOMS

• Difficulty starting or no-start conditions.
• Engine stalling or stalling after a restart.
• Misfires, rough idle, or rough running at various RPMs.
• Harsh or intermittent acceleration problems.
• Check Engine Light (CEL) with DTC P0336.
• In some cases, the engine runs normally when cold but exhibits symptoms as it warms up (or vice versa).
• Possible loss of power or limited performance (limp mode) depending on PCM strategy.

4. DIAGNOSTIC STEPS
   Note: Always begin with a visual and data-based check before replacing parts. Use a good OBD-II scanner capable of live data and, ideally, a scope for waveform tracing.

• Step 0: Verify the DTC and conditions

  • Confirm P0336 is still present. Note freeze-frame data (engine RPM, engine load, ambient conditions, voltage, etc.) at the time the code set.
  • Check for related codes (P0335, P0337, P0338, P0339, P0340, etc.) which can help triangulate the issue (CKP vs CMP vs wiring vs PCM).

• Step 1: Electrical health check

  • Battery and charging system: measure resting voltage (should be ~12.6 V or higher) and charging voltage under load (typically 13.5–14.5 V). A weak or fluctuating supply can cause CKP readings to be out of range.
  • Grounds: inspect engine and sensor grounds for corrosion, loose connections, or high resistance.

• Step 2: CKP sensor and harness inspection

  • Visually inspect the CKP sensor, its mounting, and the wiring harness for damage, oil contamination, heat damage, or loose connectors.
  • Disconnect and inspect the CKP connector pins for corrosion or bent pins. Ensure a solid, clean connection when reinstalled.
  • Wiggle-test the wiring near the sensor and along its run while observing live sensor data to catch intermittent faults.

• Step 3: CKP signal data test

  • With the engine cranking, monitor CKP signal live data. You should see a stable, clean waveform/pulse sequence that correlates with engine speed. The waveform should start at a low RPM and scale with RPM; no erratic spikes or flatlines.
  • If you have access to an oscilloscope, measure the CKP waveform directly. A weak or noisy signal, missing teeth on the reluctor ring, or intermittently missing pulses indicate sensor or reluctor issues.
  • Compare CKP readings to actual engine RPM. If there is a mismatch (RPM reported by CKP does not match tachometer/RPM), suspect CKP wiring or PCM interpretation.

• Step 4: Inspect the reluctor ring and timing reference

  • Check for a damaged or misaligned reluctor ring on the crankshaft.
  • Verify there is no debris or machining burrs that could disrupt the signal.
  • If the engine has timing-related concerns (rare for P0336 alone), check for timing chain/belt wear or misalignment. This typically requires more invasive inspection.

• Step 5: Inspect related sensors and circuits

  • CMP (camshaft position sensor) circuit: CMP issues can mimic CKP problems. If CMP data shows anomalies, inspect CMP wiring and sensor as well.
  • Check for short-to-ground or short-to-battery conditions on CKP circuit wiring.
  • Check any power supply relay and PCM power circuits that feed the CKP sensor.

• Step 6: Consider software or PCM issues

  • If wiring and sensor checks are clean, consider updating or reprogramming the PCM per the manufacturer’s service literature. A software calibration update can resolve false CKP range faults in some cases.

• Step 7: Decide on a repair strategy

  • If a faulty CKP sensor is confirmed (or highly suspected) and the signal is out of range, plan replacement.
  • If wiring or harness faults are observed, repair or replace the wiring, connectors, and any damaged harness components.
  • If the reluctor ring or timing components are damaged, address them accordingly.
  • If PCM issues are suspected after exhaustive tests, consult the dealer for software updates or PCM replacement considerations.

• Step 8: Post-repair checks

  • Clear codes and perform a road test. Confirm the CKP signal is reading correctly over a wide range of RPMs and that the engine starts reliably.
  • Confirm there are no other related codes popping up after the repair.

5. RELATED CODES

• P0335 – Crankshaft Position Sensor A Circuit Malfunction
• P0337 – Crankshaft Position Sensor A Circuit Low Input
• P0338 – Crankshaft Position Sensor A Circuit High Input
• P0339 – Crankshaft Position Sensor A Circuit Intermittent
• P0340 – Camshaft Position Sensor Circuit (Bank 1 or A)
• P0330 – Knock sensor or misfire-related codes (contextual reference; not CKP-specific but sometimes appear with misfire conditions)
  Note: These codes share similar symptoms and diagnostic pathways and can help narrow down CKP/circuit vs CMP issues.

6. REPAIR OPTIONS AND COSTS (2025 PRICES)
   Prices vary by region, shop, and whether OEM or aftermarket parts are used. The ranges below reflect typical market pricing and labor times for a 2019–2024 Ram 1500. All prices are estimates and include parts and labor unless noted.

• CKP sensor replacement

  • Parts: OEM/Manufacturer stock sensor typically $60–$140. Aftermarket equivalents often $15–$60.
  • Labor: about 0.5–1.5 hours depending on access (some models require belt removal or alternator repositioning).
  • Estimated total: roughly $120–$350 (parts + labor). If the sensor is easily accessible, costs are at the lower end; if it requires more disassembly, higher end.

• Wiring/harness repair or connector replacement

  • Parts: $20–$100 (weatherproof connectors, wiring repair kits, harness portion replacement).
  • Labor: 1–3 hours depending on accessibility and whether sections must be replaced.
  • Estimated total: $150–$500.

• Reluctor ring or timing reference issues (reluctor ring inspection/repair)

  • Parts: usually low to moderate if only a damaged reluctor ring or sensor mounting hardware is involved.
  • Labor: 2–4 hours if it requires sensor removal and timing-related checks.
  • Estimated total: $300–$900.

• Timing components or mechanical timing repair (if found related)

  • Parts: timing chain/belt kit, tensioners, guides if applicable; $100–$400 for parts.
  • Labor: 4–8+ hours depending on engine configuration; often a larger job.
  • Estimated total: $800–$2,000+.

• PCM replacement or reflash (software update)

  • Parts: PCM itself typically $400–$900 (depends on OEM vs remanufactured).
  • Labor/Software: $100–$350 for a reflash or programming; plus diagnostic time.
  • Estimated total: $500–$1,300. In rare cases, OEM PCM replacement can be higher.

• Miscellaneous costs

  • Diagnostic fee: some shops charge $100–$150 for initial diagnosis (often waived if you proceed with the repair at the same shop).
  • Foreign object damage, rust repair, or special tools may add small costs.

7. DIY VS PROFESSIONAL

• DIY feasibility: Replacing a CKP sensor is typically within the skill set of a competent automotive DIYer, especially if the sensor is easily accessible. You will need basic hand tools, a torque wrench for mounting bolts, a multimeter or test light for basic checks, and ideally a scan tool with live data to verify signal integrity. If wiring harness work or scope testing is new to you, consider professional help.
• When to go pro: If you suspect wiring harness damage, reluctor ring damage, timing-related issues, or if you lack a reliable scan tool capable of live CKP waveform testing, a professional diagnosis is advisable. PCM software updates should be handled by a dealer or qualified shop with the right hardware/software.
• Safety considerations: On modern vehicles, certain sensors are integrated with air-bag systems and other safety-critical components. If you’re not confident with electrical diagnostics or if the engine is difficult to access (e.g., behind belts, pulleys, or in tight spaces), a professional service is the safer choice.

8. PREVENTION

• Keep electrical health optimal: maintain a healthy battery and alternator; clean grounds; avoid voltage dips that can affect sensor readings.
• Regular inspections: during routine maintenance, inspect CKP sensor and wiring for signs of wear, chafing, oil exposure, heat damage, or corrosion.
• Use quality parts: replace CKP sensors with reputable OEM or high-quality aftermarket parts; ensure connectors are clean and secure.
• Avoid contamination: keep oil leaks, coolant leaks, and debris away from the CKP sensor area. Oil or coolant contamination can degrade sensor performance.
• Address issues early: if you notice intermittent stalling, rough idle, or misfires, don’t ignore them. Early diagnosis can prevent a full failure that leaves you stranded.
• Timely software updates: if your Ram is due for a PCM software update at the dealer, consider it as part of preventive maintenance to ensure proper signal processing and timing.

Data and limitations

• The provided information shows no recalls and no NHTSA complaints for this exact code and vehicle window. No recalls found in NHTSA database.
• This guide combines those data limitations with general, widely accepted diagnostic practices for CKP-related DTCs. While the steps reflect common automotive procedures, always consult the Ram-specific service manual for engine-specific specs, connector pinouts, torque values, and the exact expected CKP waveform characteristics for your engine configuration.
• If you require precise service procedures, torque specs, or wiring diagrams, obtain the official Dodge Ram 1500 service documentation for your model year and engine variant.