P0335 Buick Code - Crankshaft Position Sensor Circuit
Quick Answer
The crankshaft position sensor is an internally magnetic biased digital output integrated circuit sensing device. Common causes include Faulty Crankshaft Position Sensor, Crankshaft Position Sensor harness is open or shorted, Crankshaft Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0335 Buick indicates Crankshaft Position Sensor Circuit.
- Common causes
- Common causes include Faulty Crankshaft Position Sensor, Crankshaft Position Sensor harness is open or shorted, Crankshaft Position Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0335 Buick Description
The ECM also has a dedicated replicated crankshaft position sensor signal output circuit that may be used as an input signal to other modules for monitoring engine RPM.
The Diagnostic Trouble Code (DTC) will be set when no signal is sent from the Crankshaft Position Sensor to the ECM for greater than 1s.
What are the Possible Causes of the DTC P0335 Buick?
- Faulty Crankshaft Position Sensor
- Crankshaft Position Sensor harness is open or shorted
- Crankshaft Position Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0335 Buick?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0335 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0335 Buick Code
1. What does the OBDII code P0335 mean on a Buick?
P0335 indicates a malfunction in the crankshaft position sensor circuit, which is responsible for monitoring the crankshaft's position and engine speed.
2. What are the common symptoms of code P0335 in a Buick?
Symptoms may include engine stalling, difficulty starting, rough idling, reduced power, and the check engine light illuminating.
3. What causes the P0335 code to appear on a Buick?
Common causes include a faulty crankshaft position sensor, damaged wiring or connectors, a failed PCM (Powertrain Control Module), or issues with the reluctor ring.
4. Can a bad crankshaft position sensor cause the engine not to start?
Yes, a faulty crankshaft position sensor can prevent the engine from starting, as it disrupts the ignition and fuel injection timing.
5. How do you diagnose the P0335 code on a Buick?
Start by inspecting the crankshaft position sensor, its wiring, and connectors for damage. Use a multimeter to test the sensor and check for proper voltage and continuity.
6. Is it safe to drive with the P0335 code on a Buick?
Driving with this code is not recommended, as it can cause stalling or sudden loss of power, which could be dangerous.
7. How much does it cost to fix the P0335 code on a Buick?
The repair cost depends on the issue, but replacing the crankshaft position sensor typically costs between $100 and $300, including parts and labor.
8. Can a bad battery cause the P0335 code on a Buick?
A weak or failing battery can sometimes cause electrical issues, but it’s unlikely to directly trigger the P0335 code. Check the sensor and wiring first.
9. Will clearing the P0335 code fix the problem?
Clearing the code will turn off the check engine light temporarily, but the issue will return if the underlying problem is not resolved.
10. What tools are needed to fix the P0335 code on a Buick?
You may need an OBDII scanner, a multimeter, basic hand tools, and potentially a replacement crankshaft position sensor.
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