Quick answer
Code P0336 is “Crankshaft Position Sensor ‘A’ Circuit Range/Performance.” The ECM is receiving an irregular or out-of-range signal from the crankshaft position (CKP) sensor, which tracks crankshaft position and rotational speed for ignition and fuel timing. A range/performance fault can cause misfires, rough idle, stalling — or a no-start. The usual causes are a failing CKP sensor, damaged wiring, or a damaged/misaligned reluctor (tone) ring.
The P0336 code — a Crankshaft Position Sensor A Circuit Range/Performance issue — is a common DTC worldwide. This guide covers the causes, symptoms, diagnosis and fixes, and shows how a capable scanner like the iCarsoft CR MAX (Bluetooth, bi-directional, live data) makes the job easier for DIYers and pros.
1What Does P0336 Mean?
P0336 is triggered when the Engine Control Module (ECM) detects an irregular signal from the crankshaft position (CKP) sensor, which monitors the crankshaft’s position and rotational speed. That sensor is critical for ignition and fuel timing, so a range/performance fault — a signal that’s present but erratic or outside the expected window — can lead to misfires, stalling or a failure to start.
2What Causes P0336?
- Faulty crankshaft position sensor: the sensor is damaged, worn or failing.
- Wiring issues: damaged, corroded or loose wiring/connectors in the CKP circuit.
- Reluctor ring damage: the tone wheel/reluctor ring on the crankshaft is damaged or misaligned.
- ECM problems: rare, but a faulty ECM can misinterpret the sensor signal.
- Interference: electromagnetic interference (EMI) from other components corrupting the CKP signal.
3What Are the Symptoms?
Symptoms of P0336 include a check engine light, engine misfires, stalling, rough idling, difficulty starting and reduced power. In severe cases the vehicle may fail to start at all, leaving you stranded.
4Which Cars Are Affected?
P0336 can affect any OBD-II vehicle, particularly higher-mileage cars or those with neglected maintenance. Commonly affected models include:
- Ford — F-150, Focus, Taurus (2000–2015): CKP sensor wear.
- Chevrolet — Silverado, Malibu (2005–2016): wiring corrosion.
- Toyota — Camry, Corolla (2002–2014): reluctor-ring damage.
- Honda — Civic, Accord (2001–2013): CKP sensor failures.
- Nissan — Altima, Maxima (2004–2015): sensor or wiring issues.
- European — BMW 3 Series, VW Jetta (2003–2016): sensor degradation on high-mileage cars.
- Others — Dodge Ram, Hyundai Elantra, especially older, neglected examples.
5How Serious Is P0336? Can You Keep Driving?
Driving with P0336 isn’t recommended. It can cause stalling or a failure to restart, which is a real safety risk if the engine quits in traffic — and prolonged issues can damage other engine components. Use a scan tool to monitor it and get the repair done promptly.
6How to Diagnose P0336
Use a capable scan tool with live data, such as the iCarsoft CR MAX, to:
- Scan for P0336 and related codes (e.g. P0335 for a CKP circuit malfunction).
- Inspect the CKP sensor and its wiring for damage, corrosion or loose connections.
- Test the CKP sensor output with a multimeter (compare to manufacturer specs).
- Check the reluctor ring for damage or debris, using a borescope if needed.
- Verify ECM operation by ruling out the other causes first.
Avoid these common mistakes:
• Replacing the sensor without checking the wiring. • Overlooking physical damage to the crankshaft reluctor/tone wheel. • Confusing P0336 with camshaft position sensor codes — verify which circuit is actually reporting.
7How to Fix P0336
Based on your diagnosis:
- Replace the crankshaft position sensor if it’s faulty (use OEM parts).
- Repair or replace damaged wiring or connectors in the CKP circuit.
- Clean or replace the reluctor ring if it’s damaged or obstructed.
- Reprogram or replace the ECM if it’s malfunctioning (rare).
Diagnosing P0336 is moderately difficult — wiring and sensor checks are straightforward, but inspecting the reluctor ring can require a borescope.
8Repair Costs in the US
| Repair | Cost (parts + labor) |
|---|---|
| Crankshaft position sensor replacement | $100–$300 |
| Wiring repair | $50–$200 |
| Reluctor ring replacement | $200–$600 |
| ECM reprogramming / replacement | $500–$1,500 |
Ignoring P0336 can lead to stalling or engine damage, adding towing and further repair costs — so it’s cheaper to address early.
9Clearing the Code & Prevention
After fixing the fault, use the iCarsoft CR MAX to clear the code and confirm the repair. A battery disconnect is only a temporary reset, so always recheck with the scanner afterward. To keep P0336 from returning:
- Inspect the CKP sensor and connector during major services.
- Keep wiring harnesses secure and free from corrosion.
- Address misfires or rough running promptly to avoid sensor strain.
- Keep aftermarket electronics away from the CKP sensor to prevent EMI.
10The Right Scan Tool for P0336
The iCarsoft CR MAX reads P0336, streams live CKP data, and helps you pinpoint a sensor, wiring or reluctor fault — then clears the code and confirms the fix after the repair.
Recommended for P0336
iCarsoft CR MAX
Full-system, all-OBD-II diagnostics with live CKP data, bi-directional control, freeze frame and one-tap code clearing across nearly every brand — read P0336, find the fault, and verify the repair.
$369.95
Shop CR MAX Compare pro scanners11Related Trouble Codes
12P0336 — Frequently Asked Questions
Can I drive with a P0336 code?
It’s not recommended. It can cause stalling or a no-start, which is a safety risk if the engine quits while driving. Diagnose and repair it promptly.
What’s the difference between P0336 and P0335?
P0335 means the ECM sees no usable CKP signal at all (a circuit malfunction); P0336 means the signal is present but erratic or out of range (a range/performance fault).
What causes P0336 most often?
A failing crankshaft position sensor, damaged or corroded wiring/connectors, or a damaged or misaligned reluctor (tone) ring.
How much does it cost to fix P0336?
Usually $100–$300 for a CKP sensor plus labor. Wiring repairs run about $50–$200, and a reluctor ring $200–$600 if that’s the cause.
Will clearing the code fix P0336?
No — clearing it without repairing the fault only turns the light off temporarily, and the code returns. Fix the cause first, then clear and retest.
13References
- SAE International, J2012 — Diagnostic Trouble Code Definitions (the standard that defines P0336).
- Wikipedia, Crankshaft position sensor — how the CKP sensor and reluctor ring work.
