P0335 Crankshaft position sensor A circuit fault

Crankshaft position sensor circuit

P0335 in short

P0335 means the engine computer lost or rejected the crankshaft position sensor signal. Check the battery and the sensor wiring first, then the sensor itself. The engine may run normally, but this fault can cause stalling or a no-start, so get it inspected soon and stop if it stalls.

The crankshaft position sensor reads a toothed wheel on the crankshaft and tells the engine computer how fast the engine is turning and where each piston is. The computer uses that signal to time spark and fuel injection and to watch for misfires.

P0335 sets when that signal is missing or does not make sense. Because the engine depends on it, a sensor that drops out completely can stall the engine or stop it starting; an intermittent fault may only light the check engine lamp.

Weak batteries, damaged or corroded wiring, and failed sensors are all documented causes, so test before replacing parts.

Most likely causes

  1. Failed crankshaft position sensor

    Common general cause
    Why it ranks here
    Delphi lists dirt on the sensor's magnet, magnet degradation and physical damage as typical failures, and a dead sensor removes the engine's main speed and position signal.
    What would change this
    Rises if wiring and battery check out but the signal is missing or drops out on a scope; falls if the signal is clean while the code sets.
    How to test the crankshaft position sensor

  2. Damaged, pinched or corroded sensor wiring or connector

    Common general cause
    Why it ranks here
    Wiring faults are a named cause in Delphi's guidance, and Honda and Ford bulletins trace P0335 to connector corrosion and to pinched harness wires on specific models.
    What would change this
    Rises with visible corrosion, chafing or rodent damage, or if wiggling the harness makes the signal drop out; falls if the circuit tests good end to end.
    How to test the crankshaft position sensor

  3. Low battery voltage during cranking

    Supported by vehicle data
    Why it ranks here
    Toyota notes that a weak battery makes cranking speed uneven, which can set P0335 or P0340 with nothing wrong with the sensors. It is cheap to rule out.
    What would change this
    Rises if the battery fails a load test or the code set during a slow crank; falls if the battery and charging system test good.

  4. Mechanical fault at the trigger wheel or timing gear (some engines)

    Possible — needs testing
    Why it ranks here
    The sensor reads a toothed wheel on the crankshaft. Toyota released an improved intake camshaft gear for intermittent P0335 on 2AZ engines, so a mechanical cause is possible but should be tested, not assumed.
    What would change this
    Rises if a new sensor and good wiring do not cure it, or a scope shows a distorted or irregular tooth pattern.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Have the battery load-tested and check that it is fully charged, especially if the code set during slow or long cranking.

    Low riskTool: battery tester (free at many parts stores)

  2. With the engine off and cool, find the crankshaft position sensor and inspect its connector and harness for corrosion, loose pins, chafing, pinching or rodent damage.

    Use cautionTool: flashlight, service information for the sensor location

    Warning:The sensor is often low on the engine near exhaust parts. Let the engine cool, and if you must go under the car, support it on ramps or stands, never just a jack.

  3. Have a shop view the crankshaft sensor signal on an oscilloscope while cranking and running, and wiggle-test the harness.

    Best left to a shopTool: lab scope, service information

    Warning:This is done near moving belts and pulleys with the engine running. Leave it to a shop.

Symptoms

  • Hard starting or long cranking
  • Rough running, hesitation or misfire
  • Engine stalls or will not start Gets more serious: stop and have it checked.
  • Check engine light flashing Gets more serious: stop and have it checked.

Compare with: Rough idle with the check engine light on, Car shaking with the check engine light on

How to fix

  1. Write down every stored code and the freeze-frame data before clearing anything, so you can tell whether the code comes back.

  2. Have the battery and charging system tested (many parts stores do this free) and charge or replace a weak battery.

    Warning:Wear eye protection near the battery and keep sparks and flames away.

On your vehicle

Chevrolet

  • 2007–2008 · Silverado 1500 · 5.3L V8, 6.0L V8, 6.2L V8

    Supported by vehicle data

    GM has a bulletin for crank-no-start, rough running or P0335 on these trucks with the 5.3L, 6.0L or 6.2L V8. The summary does not give the cause, so ask a dealer to check bulletin 3808.

  • 2007–2008 · Tahoe · 5.3L V8, 6.0L V8, 6.2L V8

    Supported by vehicle data

    GM has a bulletin for crank-no-start, rough running or P0335 on these trucks with the 5.3L, 6.0L or 6.2L V8. The summary does not give the cause, so ask a dealer to check bulletin 3808.

  • 2007–2008 · Suburban · 5.3L V8, 6.0L V8, 6.2L V8

    Supported by vehicle data

    GM has a bulletin for crank-no-start, rough running or P0335 on these trucks with the 5.3L, 6.0L or 6.2L V8. The summary does not give the cause, so ask a dealer to check bulletin 3808.

  • 2007–2008 · Avalanche · 5.3L V8, 6.0L V8, 6.2L V8

    Supported by vehicle data

    GM has a bulletin for crank-no-start, rough running or P0335 on these trucks with the 5.3L, 6.0L or 6.2L V8. The summary does not give the cause, so ask a dealer to check bulletin 3808.

  • 2006 · Impala

    Supported by vehicle data

    GM has a bulletin for stalling or rough running with crank or cam sensor codes on this model. Ask a dealer to check bulletin 4137.

  • 2006 · Monte Carlo

    Supported by vehicle data

    GM has a bulletin for stalling or rough running with crank or cam sensor codes on this model. Ask a dealer to check bulletin 4137.

  • 3808Status unverified

    GM 3808: crank no start, rough running or P0335

    2007–2008silverado-1500, tahoe, suburban, avalanche · 5.3L V8, 6.0L V8, 6.2L V8 · issued · NHTSA 10020031

    Covers crank-no-start, rough running or P0335 on 2007-2008 GM full-size trucks and SUVs with 5.3L, 6.0L or 6.2L engines. NHTSA's summary does not give the cause or repair.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • 4137Status unverified

    GM 4137: stall, engine runs rough, P0335, P0336, P0340 or P0341

    2006impala, monte-carlo · NHTSA 10020234

    Covers stalling or rough running with crank or cam sensor codes on the 2006 Impala and Monte Carlo. NHTSA's summary does not give the cause or repair.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Honda

  • 2013–2016 · Accord

    Supported by vehicle data

    Honda traced P0335 on this model to corrosion at the crankshaft sensor connector. Inspect the connector before replacing the sensor.

  • 2015–2016 · CR-V

    Supported by vehicle data

    Honda traced P0335 on this model to corrosion at the crankshaft sensor connector. Inspect the connector before replacing the sensor.

  • A16-011Status unverified

    Honda A16-011: CKP connector corrosion, P0335 and/or P0339

    2013–2016accord, cr-v · issued · NHTSA 10087906

    Corrosion between the engine harness and the crankshaft position sensor connector can set P0335 and/or P0339 on 2013-2016 Accord and 2015-2016 CR-V.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Ford

  • 2017 · F-250 Super Duty · 6.7L

    Supported by vehicle data

    On the 6.7L engine, Ford says to check the crankshaft sensor wires about 15 inches from the connector for pinching before replacing parts.

  • SSM 46351Status unverified

    Ford SSM 46351: P0335 and other codes from pinched CKP wiring

    2017f-250-super-duty, f-350-super-duty, f-450-sd, f-550-sd · 6.7L · issued · NHTSA 10095233

    On 2017 F-Super Duty with the 6.7L engine, inspect the crankshaft sensor reference and return wires about 15 inches from the connector for pinching or damage and repair the wiring.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Toyota

  • 2007–2011 · Camry · 2AZ 2.4L

    Supported by vehicle data

    On the 2AZ engine, Toyota addresses intermittent P0335 with an improved intake camshaft gear. Ask a dealer about bulletin T-SB-0192-12.

  • 2016–2017 · Tacoma · V6

    Supported by vehicle data

    Toyota recall H0H covered about 32,000 2016-2017 V6 Tacomas built mid-September 2015 to late October 2016: excess coating on the crankshaft timing rotor could make the crank sensor malfunction and stall the engine. Check for open recalls with your VIN.

  • T-SB-0192-12Status unverified

    Toyota T-SB-0192-12: intermittent MIL with P0335 on 2AZ engines

    2006–2012camry, corolla, corolla-matrix, rav4 · 2AZ 2.4L · issued · NHTSA 10133978

    Some 2006-2012 Toyotas with the 2AZ engine can set intermittent P0335; an improved intake camshaft gear assembly addresses it.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • T-TT-0010-10Status unverified

    Toyota tech tip T-TT-0010-10: low battery voltage can set P0335 and/or P0340

    1996–2015camry, corolla, rav4, tacoma, tundra, highlander, sienna · issued · NHTSA 10132812

    Low battery voltage can make crankshaft speed uneven during cranking and set P0335 or P0340. Applies to many Toyota models from the mid-1990s to 2015; only a selection is listed here.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • P0340Camshaft position sensor circuit fault (bank 1 or single sensor)

    Shares causes Supported by vehicle data

    Toyota notes low battery voltage can set P0335 and P0340 together, and GM listed both codes on stalling 2006 Impalas. Together they point to something shared, such as battery, wiring or a timing issue, before two sensors.

  • P0300Random or multiple-cylinder misfire detected

    Shares causes Supported by vehicle data

    The misfire monitor relies on the crankshaft signal, and GM listed P0300 with P0335 on trucks with rough idle and stalling. Fix the crank signal before chasing misfires.

  • P0336The crankshaft position sensor 'A' signal is present but out of the expected range or pattern

    Same system Supported by vehicle data

    P0336 is the range or performance code for the same crankshaft sensor A. GM bulletin 4137 covers stalling and rough running with P0335, P0336, P0340 or P0341.

All Ignition and engine position sensors codes

P0335 questions

Is it safe to drive with P0335?

If the engine starts and runs normally, short careful trips to a shop are usually possible, but a failing crankshaft position sensor can stop the engine without warning. If it has stalled, cuts out or will not restart, stop driving it and have it towed.

Can a weak battery cause P0335?

Yes. Toyota notes that low battery voltage makes the engine crank unevenly, which can set P0335 or P0340 without a sensor fault. Have the battery load-tested before buying a sensor.

Should I just replace the crankshaft sensor?

Not first. Corroded connectors and pinched wiring are documented causes on some models, and a new sensor will not fix them. Inspect the wiring and check the signal, then replace the sensor if it is the fault.

Sources and review

  1. Safety Recall H0H Remedy Notice: Certain 2016-2017 Model Year Tacoma Crankshaft Position Sensor, Frequently Asked Questions — Toyota Motor North America ,
  2. Toyota Recalls Tacoma Pickups for Stalling — Automotive Fleet ,
  3. What are the symptoms of a bad crankshaft sensor? — Delphi Technologies Aftermarket
  4. ASE L1 Advanced Engine Performance Specialist Test: Composite Vehicle Type 4 Reference Booklet — National Institute for Automotive Service Excellence (ASE)
  5. Cal. Code Regs. tit. 13, § 1968.2 - Malfunction and Diagnostic System Requirements (OBD II) — California Air Resources Board (via Cornell LII)
  6. 2001 Lincoln Continental Owner's Guide - Warning lights (Check engine) — Ford Motor Company
  7. Do you drive a 1996 or newer car or light truck? (On-Board Diagnostics, EPA420-F-02-016) — U.S. Environmental Protection Agency
  8. GM 3808: Crank no start, rough running or P0335 — General Motors (via NHTSA) ,
  9. GM 4137: Stall, engine runs rough, P0335, P0336, P0340 or P0341 — General Motors (via NHTSA)
  10. Honda A16-011: corrosion at the CKP sensor connector, P0335 and/or P0339 — American Honda Motor Co. (via NHTSA) ,
  11. Ford SSM 46351: P0335 and other codes from damaged crank sensor wiring, 2017 F-Super Duty 6.7L — Ford Motor Company (via NHTSA) ,
  12. Toyota Tech Tip T-TT-0010-10: low battery voltage can set P0335 and/or P0340 — Toyota Motor Sales (via NHTSA) ,
  13. Toyota T-SB-0192-12: intermittent MIL with P0335 on 2AZ engines — Toyota Motor Sales (via NHTSA) ,
  14. GM 3375: Rough or unstable idle, hesitation, surge or stalling with P0300, P0335 or P0336 — General Motors (via NHTSA)
Last reviewed
Written by
Saurabh K.
Editorial review
Pending
Technician review
Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

My Car

Pick your car and code pages will point out notes and bulletins for it. Saved only in this browser.

Fill this in from your VIN

Used once to identify your engine; not stored.