P162F

Code

LAND ROVER P — Powertrain

starter motor deactivated - Crankshaft rotation time too long

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 11 EN: 25 RU: 11

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Weak or discharged battery
High-resistance or corroded battery/ground/positive cables or connections
Faulty or sticking starter motor or solenoid
Excessive starter motor current draw (internal mechanical fault)
Engine mechanical resistance (hydraulic lock, seized bearing, high compression, timing assembly fault)
Crankshaft position sensor fault or intermittent signal during cranking

Symptoms

Engine does not start or cranks slowly
Single click or no click from starter when key is turned, followed by no further starter attempts
Repeated long cranking attempts before starter is disabled
Dashboard lights dim noticeably during cranking
MIL may be illuminated; related DTCs present
Intermittent no-crank condition

What to check

Read and record freeze-frame and related DTCs from PCM
Check battery open-circuit voltage (resting) and voltage while cranking
Measure voltage at starter motor terminal during cranking (watch for excessive drop)
Check starter current draw with appropriate ammeter or inductive clamp
Inspect battery terminals, cable ends and engine/chassis grounds for corrosion, tightness and damage
Listen for starter solenoid click and observe starter engagement

Signal parameters

Battery resting voltage (V)
Battery voltage while cranking (V)
Starter current draw (A) during cranking
Time to first crankshaft rotation or total cranking time (s) recorded by PCM
Crankshaft position sensor signal waveform and pulse frequency during cranking (Hz)
Engine speed (RPM) during cranking attempts

Diagnostic algorithm

Retrieve DTC P162F and any related codes; note freeze-frame data (battery voltage, engine temp, rpm).
Verify battery state of charge and health; recharge or load-test battery if below spec. Confirm resting voltage ≥12.4 V and cranking voltage typically not below ~9.5 V (manufacturer spec may vary).
Visually inspect and clean battery posts, cable ends and ground straps; secure all connections and re-test cranking voltage. Check for corrosion or internal cable damage.
Measure voltage at starter B terminal and at starter body to chassis ground while cranking; large voltage drops indicate cable/connection resistance problems. Repair or replace cables as needed.
Measure starter current draw with an ammeter or clamp; compare to specification. High draw suggests mechanical failure in starter; low/no draw suggests supply/relay/solenoid fault. Replace or bench-test starter if out of spec.
Capture crankshaft position sensor signal with oscilloscope while attempting to crank. Look for missing pulses, jitter, or loss of signal that could make PCM think crankshaft rotation is too slow. Replace or repair CKP sensor/wiring if faulty.
Check starter relay, fuse, and PCM starter-control output for proper operation. Monitor PCM ground and power circuits. Repair wiring or replace faulty relay/PCM outputs per manufacturer guidance.
Check for immobiliser or anti-theft system messages; perform immobiliser diagnostics and key validation if the starter is being disabled by security system.
If starter/engine mechanical issues suspected, attempt to rotate engine by hand (with correct procedures) and inspect for internal engine problems (e.g., seized bearing, timing chain/jump). Perform compression or leak-down tests if indicated.
After repairs, clear codes, perform multiple start attempts and verify no recurrence. If intermittent or no fault found, capture extended data logs and consider software/ECM updates from dealer/technical bulletins.

Likely causes

Weak battery or poor battery connections
Starter motor or solenoid failure (wear, stuck pinion)
High-resistance ground or positive cable connection
Crankshaft position sensor missing or noisy signal during cranking

Fault status

⚠️ Status

Starter motor disabled by PCM: crankshaft rotation time exceeded allowed threshold during cranking. Starter disabled until fault cleared and condition corrected.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours

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P162F — starter motor deactivated - Crankshaft rotation time too long