P0337 on Pontiac
Crankshaft Position Sensor "A" Circuit Low Input
P0337 on Pontiac vehicles indicates crankshaft position sensor "a" circuit low input. Au7o has documented this code across 1 Pontiac model — most commonly on Bonneville. The crankshaft position (CKP) sensor watches a toothed reluctor wheel on the crankshaft and tells the engine computer exactly how fast the crank is spinning and where each piston is, which the computer needs to time spark and fuel injection. P0337 sets when the computer sees the sensor's signal voltage stuck near zero — below the expected range — usually because the sensor has failed or its wiring is open, shorted to ground, or corroded. You may notice hard starting, an engine that cranks but won't start, rough idle, stalling, or reduced power and fuel economy; on many vehicles the engine simply won't run while the fault is present. Ignoring it risks being stranded by a sudden no-start or a stall in traffic, so it should be diagnosed promptly. Typical repair costs on Pontiac range from $150 to $500, depending on the specific model and root cause.
Common Causes of P0337
- •Failed crankshaft position sensor (the most common cause)
- •Open, shorted-to-ground, or chafed wiring in the CKP sensor circuit
- •Loose, corroded, or damaged CKP sensor connector
- •Damaged, dirty, or missing-tooth reluctor (tone) ring on the crankshaft
- •Metal debris on the sensor's magnetic tip or incorrect sensor air gap
- •Low battery voltage or a weak starter producing an out-of-range signal during cranking
- •Faulty powertrain control module (rare)
P0337 on Pontiac by Model
Pontiac Bonneville(1 issue)
- Crankshaft Position Sensor / Ignition Control Module Failure Causing Stalling and No-Start1992-2005
Failing crankshaft position sensors and ignition control modules are among the most common causes of intermittent stalling and no-spark no-start conditions on 3800-powered Bonnevilles, documented by RepairPal as a known model problem. The CKP sensor's hall-effect elements degrade with heat, causing the engine to randomly die while driving — often with no trouble code — and frequently restart only after cooling down. The ICM, which needs both 18X and 3X/sync crank signals to fire the coils, exhibits the same heat-related intermittent failure.
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What does P0337 mean on Pontiac?▼
P0337 stands for "Crankshaft Position Sensor "A" Circuit Low Input." The crankshaft position (CKP) sensor watches a toothed reluctor wheel on the crankshaft and tells the engine computer exactly how fast the crank is spinning and where each piston is, which the computer needs to time spark and fuel injection. P0337 sets when the computer sees the sensor's signal voltage stuck near zero — below the expected range — usually because the sensor has failed or its wiring is open, shorted to ground, or corroded. You may notice hard starting, an engine that cranks but won't start, rough idle, stalling, or reduced power and fuel economy; on many vehicles the engine simply won't run while the fault is present. Ignoring it risks being stranded by a sudden no-start or a stall in traffic, so it should be diagnosed promptly. On Pontiac specifically, this code is documented across 1 model.
What causes P0337 on Pontiac vehicles?▼
Common causes on Pontiac: Failed crankshaft position sensor (the most common cause), Open, shorted-to-ground, or chafed wiring in the CKP sensor circuit, Loose, corroded, or damaged CKP sensor connector, Damaged, dirty, or missing-tooth reluctor (tone) ring on the crankshaft, Metal debris on the sensor's magnetic tip or incorrect sensor air gap. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0337 on a Pontiac?▼
Repair costs on Pontiac range from $150 to $500, depending on the specific model and root cause.
Which Pontiac models have P0337 documented?▼
Au7o has documented P0337 on 1 Pontiac model: Bonneville.