P0E4E

Code

Generic P — Powertrain

Engine Failed to Crank

Brand: Generic

Type: P — Powertrain

Views: UK: 25 EN: 38 RU: 31

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Page language: EN

Causes

Battery or main power supply failure (low voltage or poor connection)
Starter motor, solenoid, or starter relay fault
Open or short in starter control wiring or fuse(s)
Crankshaft position sensor (CKP) fault or wiring/connectors open
Ignition switch, clutch/neutral safety switch, or transmission range sensor fault
Engine control module (ECM/PCM) power, ground, or internal fault

Symptoms

No cranking noise when key/remote start is used
Clicking relay/solenoid sound but engine does not turn
Starter motor spins but engine does not crank
Instrument cluster shows normal key/IGN lights but no engine speed (RPM) during attempt
Multiple related codes (starter, CKP, voltage, immobilizer)
Vehicle immobilizer or security light on

What to check

Verify battery voltage at rest and during cranking (measure at battery posts)
Inspect battery terminals and ground connections for corrosion/tightness
Check starter relay, starter fuse, and main fusible links
Observe engine speed (RPM) PID while attempting to crank using a scan tool
Listen for starter engagement (click or motor spin) during start attempt
Scan for related DTCs (CKP, starter control, immobilizer, voltage & CAN bus)

Signal parameters

Battery voltage (rest): typically 12.4–12.8 V; during cranking should remain above ~9–10 V (varies by vehicle)
Starter control command: switched 12 V to starter relay/solenoid when crank requested
Starter engagement: audible solenoid click and starter motor current draw increases when engaged
Engine speed (crank) PID: should show cranking RPM (commonly >100–300 RPM) if engine is turning
Crankshaft position (CKP) sensor output: pulsed digital/AC signal (0–5 V TTL or sensor-specific waveform) present while cranking
CAN/bus: ECM should receive start request/ignition state messages from body/BCM

Diagnostic algorithm

Verify vehicle is safe and parking brake/neutral/clutch conditions are met. Record events with a scan tool.
Check battery state of charge and voltage at terminals. Clean/tighten terminals. If low, charge or load-test battery.
With scan tool, command crank or observe start attempt while monitoring starter-related PIDs (battery voltage, starter command, engine RPM, CKP signal). Note absence/presence of signals.
If battery voltage collapses below specification during crank, investigate battery or high-resistance connections and retest.
If starter relay/solenoid is not being commanded (no 12 V on control), check fuse, relay, ignition switch, neutral/clutch switch and associated wiring. Repair as needed and retest.
If starter is commanded but engine does not turn and no CKP signal is present, inspect CKP sensor and wiring/connectors. Check sensor resistance and/or scope for waveform while cranking or bench-test sensor.
If starter motor spins but engine won’t crank (no crankshaft rotation), bench-test starter or remove/inspect starter drive; replace as required.
Check for immobilizer/security system inhibiting crank (verify security lamp, attempt key relearn or use known-good key). Clear codes and attempt restart.
Verify ECM power and ground circuits; check for related ECM codes. If ECM fault suspected after wiring checks, follow manufacturer procedures before replacement.
If mechanical seizure is suspected (no starter sound, immovable crank), perform mechanical checks (attempt to turn crank manually with appropriate tools) and verify engine internal condition.

Likely causes

Dead or weak battery or corroded/loose battery terminals
Failed starter solenoid or worn starter preventing engagement
Blown starter fuse or faulty starter relay
No CKP signal due to bad sensor, damaged wiring, or connector corrosion
Safety interlock (neutral/clutch) not signaling to ECU
ECM not receiving power/ground or immobilizer inhibited start

Fault status

⚠️ Status

No engine speed (crank) detected during start attempt. Starter command present/absent (see logs). Possible missing CKP signal, starter fault, battery/power or immobilizer inhibition.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5–2.0 hours