P0335 on Kia: How to Diagnose & Fix
Crankshaft Position Sensor A Circuit Malfunction
2 Kia models · 2 documented issues · 2 critical · $120-$400 repair
P0335 on Kia by model: symptoms, diagnosis and fix
NHTSA recall 03V-067 covers 2001-2002 Optima vehicles equipped with 2.5L or 2.7L V6 engines. Crankshaft-position-sensor cases did not meet dimensional specifications; internal gaps could let epoxy contact the printed circuit board and crack a capacitor, which could cause the engine to stall.
Common Symptoms
- Engine may stall
How to Fix
Check the VIN for recall 03V-067 completion. The official remedy is free dealer replacement of the crankshaft position sensor. Because this is a VIN-specific recall repair, no retail sensor or generic wiring kit is linked.
Sources for this issue (1)
The CKP sensor on the Forte becomes heat-sensitive as it ages: the signal drops out once the engine bay is hot, so the engine stalls when coming to a stop or at idle, then refuses to restart until it cools for 10-20 minutes. Owners describe the car cranking normally with no spark/injection event and eventually setting P0335 (Crankshaft Position Sensor A Circuit). It is often misdiagnosed as a fuel pump or battery issue because the symptom is intermittent and disappears when the car is cold. Reported across the TD, Koup 2.4 Theta II, and YD/Forte5 cars.
Common Symptoms
- Engine stalls when slowing to a stop, especially when warmed up
- Cranks but will not start until it cools down
- Long crank time
- Tachometer drops erratically or reads zero while cranking
- Check engine light
How to Fix
Confirm before replacing: watch RPM in live data while the engine stalls or during a hot no-start crank - RPM dropping to zero while cranking points at the CKP. Check the sensor connector and harness for oil contamination and chafing, and verify the tone-ring/flexplate teeth are not damaged. Replace with a genuine Kia sensor rather than a cheap aftermarket unit, as owners report repeat failures with off-brand parts. The sensor is inexpensive; most of the cost is access labor. If P0365/camshaft codes appear alongside it, inspect the CVVT circuit and harness rather than blindly replacing both sensors.
Sources for this issue (3)
P0335 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0335 mean on a Kia?
P0335 stands for "Crankshaft Position Sensor A Circuit Malfunction." This code means the engine computer has lost or detected a faulty signal from the crankshaft position sensor (sensor A), which tells the computer exactly how fast and in what position the crankshaft is rotating. That signal is essential for timing the spark and fuel injection, so a problem here can cause hard starting, stalling, or a no-start condition. The computer sets this code when the crank sensor signal is missing, erratic, or out of its expected pattern. Causes range from a failed sensor or damaged wiring to a problem with the reluctor (tone) ring the sensor reads. On Kia it is documented across 2 models: Optima, Forte.
What are the most common causes of P0335?
The most common causes of P0335 are: Failed crankshaft position sensor, Damaged, corroded, or loose sensor wiring/connector, Metal debris or oil contamination on the sensor tip, Damaged or misaligned reluctor (tone) ring, Excessive air gap between sensor and tone ring, Wiring shorted or open in the sensor circuit, Faulty PCM/ECM (rare). The specific cause varies by vehicle.
How much does it cost to fix P0335 on a Kia?
Published repair estimates on Kia range from $120 to $400 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0335 on a different make?
View P0335 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.