P1370moderate severityPowertrain
IC Module 4X Reference Circuit Too Many Pulses
on 2016 Cadillac ATS 2.5L I4 · RWD
What this code means
The PCM detected too many pulses from the 4X reference signal in the ignition control circuit. This can be caused by electrical noise or a failing component.
Symptoms
- Check Engine Light
- Engine misfires
- Timing issues
- Rough running
Common causes
- Damaged crankshaft reluctor wheel (extra material)
- Electrical noise in 4X circuit
- Faulty ignition control module
- Wiring interference
Diagnostic steps
- Scope 4X reference signal for extra pulses
- Inspect crankshaft reluctor wheel
- Check wiring for electromagnetic interference
- Test IC module
Repair notes
Inspect reluctor wheel for damage. Shield wiring from interference sources. Replace IC module if faulty.
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