P0335 Code: Jeep Grand Cherokee (2022-2024) - Causes, Symptoms & Fixes

No recalls found in NHTSA database

No official NHTSA complaints were found for the Jeep Grand Cherokee (2022–2024) with the P0335 fault code in the provided data. This guide uses general OBD-II knowledge and typical Jeep Grand Cherokee engine configurations to outline diagnostic steps, costs, and options. Data limitations mean actual factory-reported issues may differ outside this dataset.

CODE MEANING AND SEVERITY

• What P0335 means: P0335 is the OBD-II code for a Crankshaft Position Sensor A Circuit Malfunction. The PCM/ECM is not receiving a valid signal from the crankshaft position sensor (CKP) or the signal is outside expected ranges.
• Why it matters: The CKP sensor provides timing information critical for spark and fuel injector events. A bad signal can cause hard starting, stalling, or no-start conditions, and may lead to rough running or misfires if the engine manages to run intermittently.
• Severity characteristics:
  • Potential hard start or no-start.
  • Possible engine stalling while driving.
  • Possible limp-home mode if the PCM detects a severe timing signal error.
  • The vehicle may run erratically or with reduced power while the MIL is illuminated.

COMMON CAUSES ON JEEP GRAND CHEROKEE

• Faulty crankshaft position sensor (CKP) itself.
• Damaged, corroded, or loose CKP sensor connector or wiring harness.
• Wiring shorts or opens between the CKP sensor and PCM (including harness routing that rubs on moving components or heat/ oil exposure).
• Oil leakage or contamination around the CKP sensor or reluctor ring (tone ring) causing a weak/erratic signal.
• Worn, cracked, or damaged reluctor ring (tone wheel) on the crankshaft.
• Improper sensor installation (misalignment, incorrect torque, or spacing).
• ECM/PCM grounding or power supply issues.
• In rare cases, a faulty PCM or software/firmware issue affecting CKP signal interpretation.
• Engine timing concerns (less commonly the primary cause for P0335, but severe timing problems can upset crank signal integrity).

SYMPTOMS

• Engine may fail to start or be extremely difficult to start.
• Engine stalls or dies while driving; may restart after a short delay.
• Rough idle or intermittent misfires.
• Check Engine Light (MIL) on with P0335 stored or pending.
• Tachometer may show irregular or erratic readings.
• Reduced engine power or surging during acceleration (less common but possible if timing reference is unstable).

DIAGNOSTIC STEPS

Note: When diagnosing P0335, start with simple checks and progress to more involved tests. Document all observed data and clear codes only after confirmed repair.

Retrieve and review data

• Use a modern scan tool to confirm P0335 is current, check freeze frame data, and see any related codes (P0336–P0339, etc.).
• Note if multiple ignition or misfire codes accompany P0335.

Visual inspection

• Inspect CKP sensor and connector for oil leaks, dirt, corrosion, damaged wires, or pin push-out.
• Check the harness routing to ensure it isn’t rubbing on belts, pulleys, or hot surfaces.
• Verify the sensor is securely mounted with correct gap/torque per service guidance for the engine variant.

Inspect the crank sensor and reluctor ring

• If accessible, inspect the CKP sensor for physical damage.
• Inspect the reluctor ring (tone ring) for bent teeth or damage. A damaged ring can cause intermittent signals or noise.

Electrical checks (when safe and appropriate)

• Inspect the CKP sensor wiring for continuity from the sensor to the PCM connector (no opens or shorts).
• Check for proper voltage supply and ground at the CKP sensor if it uses a 3-wire configuration; verify common ground integrity.
• Check for insulation resistance on the wiring, especially in areas prone to heat or oil exposure.

Signal testing (best with scope)

• With engine cranking or running, use an oscilloscope or a capable scan tool to view the CKP signal waveform.
• Look for a clean, consistent waveform with expected teeth-to-signal cadence. A missing tooth, jitter, or no waveform indicates sensor, wiring, or reluctor issues.

Sub-system tests

• If available, perform a live data test for CKP frequency/phase relation relative to the crank position (and if you have access to a cam/crank correlation test, verify timing alignment).
• Check for related faults in the PCM or updated software recalls/tables (though recalls/TSBs are not indicated in the current data).

Component swap/verification (if safe and feasible)

• If you have a known-good CKP sensor available, swapping in a replacement can confirm whether the original sensor is the culprit (ensure proper torque and alignment on re-installation).
• If the harness or connector is suspect, consider replacing the connector or repairing the harness rather than the sensor alone.
• In rare cases with persistent symptoms and suspected reluctor ring damage, you may need to inspect or replace the crankshaft timing-related parts.

Clear codes and test drive

• After repairs, clear codes and perform a controlled test drive to ensure P0335 does not return and that the engine starts and runs smoothly in multiple conditions (idle, acceleration, and idle+load).

RELATED CODES

• P0336: CKP sensor A circuit range/performance
• P0337: CKP sensor A circuit intermittent
• P0338: CKP sensor A circuit non-responding
• P0339: CKP sensor A circuit incorrect or no signal
• P0016 (Camshaft Position–Crankshaft Position correlation) can appear if PCM detects timing misalignment or correlation issues; not the same code but often considered in shared timing/signal failure contexts.
• Other ignition/fuel codes may appear if the engine management reacts to incorrect timing (e.g., P0300 series misfire codes), but P0335 is the primary CKP signal issue.

REPAIR OPTIONS AND COSTS (2025 prices)

Notes:

• Prices are rough estimates based on typical U.S. shop rates and parts pricing in 2025. Regional differences apply. Labor rates commonly range from $90–$180/hour depending on location and shop. OEM parts tend to be more expensive than aftermarket equivalents.
• Total cost varies with whether only the CKP sensor is replaced, or if harness, reluctor ring, ECM reprogramming, or timing-related parts are involved.

Option A: CKP sensor replacement (most common initial fix)

• Parts: CKP sensor, typically $20–$120 (OEM or aftermarket)
• Labor: ~0.5–1.5 hours
• Estimated total: $110–$260
• Notes: If the sensor is easily accessible, this is often the first repair attempted.

Option B: CKP sensor harness/connector repair or replacement

• Parts: Connector pigtail or harness piece, $10–$60
• Labor: ~1–2 hours
• Estimated total: $140–$360
• Notes: If wiring is damaged or connector corroded, this may be required instead of or in addition to a sensor replacement.

Option C: Reluctor ring (tone ring) inspection/replacement

• Parts: Reluctor ring or related timing components, $20–$60
• Labor: ~2–4 hours
• Estimated total: $240–$700
• Notes: Required if the tone ring is damaged or misaligned; more involved than a sensor swap.

Option D: ECM/PCM inspection, reprogramming, or replacement

• Parts: PCM/ECM typically $600–$1,200 (plus programming)
• Labor: 0.5–2 hours for replacement plus programming time
• Estimated total: $800–$1,800
• Notes: Consider only if sensor, wiring, and reluctor issues are ruled out or if PCM itself is suspected as the fault.

Option E: Combined repairs (sensor + wiring + reluctor)

• Parts: Mixed parts as needed (sensor, connector, ring, etc.)
• Labor: 2–5 hours
• Estimated total: $350–$1,200
• Notes: Multiple issues may coexist; a thorough diagnostic helps avoid redundant repairs.

DIY VS PROFESSIONAL

• DIY considerations:
  • Best for a straightforward CKP sensor swap on a vehicle with accessible sensor location.
  • Requires basic hand tools, a torque wrench, and electronic testing capability (multimeter or oscilloscope preferred for waveform checks).
  • Steps to DIY: locate sensor, disconnect battery, remove sensor with proper mounting hardware, install new sensor to correct torque/spec, inspect/repair harness as needed, clear codes, and test drive. Be mindful to avoid damaging wiring, sensors, or timing components.
• When to go professional:
  • If wiring harness or connector is damaged (difficult to repair properly without proper tooling).
  • If scope data shows erratic or suspect crank signals that aren’t resolved with sensor replacement.
  • If timing-related components (reluctor ring, timing chain/belt, or PCM) may be involved.
  • If PCM programming or warranty considerations require dealer tools or software access.
• Quick test to decide:
  • If a known-good CKP sensor still does not fix the issue, there is likely a wiring issue, reluctor ring problem, or PCM-related fault best handled by a professional.

PREVENTION

• Regular maintenance:
  • Keep engine oil within recommended levels; avoid oil leaks around the CKP sensor area.
  • Address oil leaks promptly to prevent contamination of sensors and connectors.
• Protect wiring:
  • Ensure wiring harnesses are properly routed away from hot surfaces and moving parts. Use protective loom or conduits where appropriate.
• Secure connections:
  • Periodic visual inspections of CKP sensor connectors for corrosion, bent pins, or loose connections.
• Software updates:
  • Ensure PCM/ECM software is up to date per factory recommendations; some timing/signal issues can be mitigated by proper calibration.
• Avoid harsh environmental exposure:
  • Minimize water intrusion and dirt around sensor areas; seal connectors when necessary.

Bottom line

• P0335 on a 2022–2024 Jeep Grand Cherokee most commonly points to a CKP sensor, its wiring, or a damaged reluctor ring. Start with the simplest fix (sensor replacement and connector inspection) and proceed to wiring or reluctor concerns if needed. Remember that the provided data indicates no recalls and no curated complaints in the dataset for this exact combination, so real-world issues could vary. If you’re not comfortable performing electrical diagnostics or scope testing, seek a qualified technician to diagnose and repair, since incorrect timing signal handling can lead to drivability issues or engine damage.