Timing Reference High Resolution Signal A Intermittent
The P0372 code means the vehicle's onboard diagnostic system has detected: Timing Reference High Resolution Signal A Intermittent. This is a critical severity code.
- Keep driving?
- No — stop driving
- DIY difficulty
- hard
- Estimated cost
- $100 - $600 (parts and labor)
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What Are the Symptoms of P0372?
- Engine stalls intermittently
- Check Engine Light on
- Engine hesitates or stumbles randomly
- Random no-start conditions
What Causes P0372? (Most Likely First)
- Crankshaft position sensor failing intermittently Very High
- Loose or corroded crank sensor connector High
- Intermittent wire break in sensor circuit Moderate
- Reluctor wheel loosening on crankshaft Low
Can I Still Drive with P0372?
No — stop driving. P0372 is rated critical severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
Why does my car stall randomly?
An intermittent crank sensor signal causes the PCM to momentarily lose track of engine position, which can stall the engine.
Can heat cause intermittent crank sensor failures?
Yes, crank sensors can fail when hot and work when cold. This is called heat soak failure and is a common failure mode.
How do I catch an intermittent crank sensor fault?
Drive with a scan tool connected and monitor the RPM signal. An intermittent sensor will show momentary RPM dropouts to zero.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P0372?
-
Monitor crank sensor signal on scan tool while engine is running. Watch for momentary dropouts.
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Wiggle test: tap and wiggle the sensor and connector while engine runs.
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Inspect connector pins for corrosion or loose fit.
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Check sensor mounting torque and inspect for oil contamination.
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Which Vehicles Commonly Get P0372?
- 2010-2020 Nissan Altima (2.5L)
- 2012-2019 Hyundai Sonata (2.4L)
- 2008-2018 Kia Optima (2.4L)
- 2011-2020 Subaru Outback (2.5L)
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