The P0335 code on a 2011 Honda Accord indicates a fault in the Crankshaft Position Sensor A circuit. It typically points to a bad crankshaft position sensor, damaged wiring or connectors, or a PCM issue, and can cause symptoms such as no-start, stalling, or rough running.
What P0335 means for the 2011 Honda Accord
The P0335 diagnostic trouble code means the engine control unit is not receiving a proper signal from the Crankshaft Position Sensor A. The PCM uses this signal to determine ignition timing and fuel delivery. A fault can prevent the engine from starting or cause intermittent running problems. The code identifies a circuit issue rather than a definite component, so further testing is required to pinpoint the root cause.
Crankshaft Position Sensor basics
The Crankshaft Position Sensor measures the rotation speed and position of the crankshaft. The data is used by the PCM to time spark and fuel injection. On most Hondas, sensor A refers to the primary CKP sensor used for basic timing in most operating modes.
Common symptoms
Drivers may notice a range of symptoms when P0335 is active. Typical signals include the following:
- Check Engine Light illuminated
- Engine won’t start or stalls after starting
- Rough idle or misfires
- Reduced power or hesitation during acceleration
- Difficulty starting in certain conditions
If you experience these symptoms, it’s prudent to scan for codes and inspect the CKP wiring and sensor.
Common causes
The code can be triggered by several issues in the crankshaft position sensor circuit:
- Faulty crankshaft position sensor
- Damaged, corroded, or loose wiring harness or connector
- Open or shorted wiring in the CKP circuit
- Faulty or damaged PCM/ECU
- Damage or misalignment of the reluctor ring/tone wheel
- Timing-related mechanical issues (less common but possible)
- Oil contamination on the sensor or connectors
Correcting physical damage and ensuring solid electrical connections are typically the first steps in resolution.
How P0335 is diagnosed on a 2011 Accord
The diagnostic process follows a structured approach to confirm the fault and identify the root cause. The steps outlined below reflect a typical workflow:
- Use an OBD-II scanner to confirm P0335 and review any freeze-frame data or related codes.
- Perform a visual inspection of the CKP sensor, its connector, and wiring for damage or corrosion.
- Test the CKP sensor resistance and continuity as specified in the service manual, and verify the reference voltage to the sensor.
- Check the signal waveform with an oscilloscope or live data to verify a proper CKP output during cranking.
- Inspect the reluctor ring or tone wheel for damage or misalignment; confirm proper mounting torque and spacing.
- Rule out mechanical timing issues if electrical tests do not explain the symptom; verify timing chain/belt integrity and cam timing as needed.
- If sensor and wiring tests are normal but the fault persists, consider PCM-related diagnostic steps per manufacturer procedures.
After completing these steps, technicians typically have a clear sense of whether the CKP sensor, its circuit, or the PCM is at fault.
Repair options and cost considerations
Repair choices and costs depend on the diagnosed cause. The following outlines common options and rough cost ranges for a 2011 Honda Accord, acknowledging that actual prices vary by region and shop rates:
- Crankshaft Position Sensor replacement: parts roughly $40–$120; labor about $60–$180; total typically $100–$300.
- Wiring harness or connector repair: parts usually $20–$80 (if damage is minor) plus labor; total commonly $100–$250.
- PCM replacement (rare; typically after other tests fail): parts $300–$900; labor $100–$350; total $400–$1,250.
- Timing-related repairs (if mechanical timing issues are found): cost varies widely, often $300–$1,500 depending on parts and labor; engine removal could be required in extreme cases.
Note: Costs vary by region, shop, and vehicle condition. A precise quote requires a diagnostic check by a qualified technician.
Notes for the 2011 Honda Accord
For the 2011 Accord, P0335 can affect multiple engines (including common I4 and V6 variants) since the CKP circuit feeds timing data to the PCM. Location and harness routing vary by engine type, so always reference the factory service manual for exact test procedures, torque specs, and replacement steps. If a PCM fault is suspected, dealership-level diagnostics and software considerations may apply.
Summary
P0335 indicates a fault in the Crankshaft Position Sensor A circuit, a critical data source for ignition timing and fuel injection. In a 2011 Honda Accord, this can manifest as starting problems, stalling, misfires, or reduced power. Most often the fix involves inspecting or replacing the CKP sensor, repairing damaged wiring, or addressing a PCM issue if necessary. A careful diagnostic—using code readers and waveform testing—is essential before replacing parts to avoid unnecessary repairs.