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2017 Honda Pilot EX-L - Cranks But Won't Start - No Codes Yet

0

Eric V. · rep 0 · May 22, 2:41 AM · 1 replies · solved · Question

Vehicle: 2017 Honda Pilot EX-L

Hey everyone,

My 2017 Honda Pilot EX-L is having a serious issue. This morning, I went to start it, and it just cranks and cranks but won't turn over and start. The battery seems fine, as it's cranking strongly, and all the lights and accessories work.

I haven't been able to pull any specific OBD-II codes yet, as the check engine light isn't on, and my scanner isn't showing any pending codes. It was running perfectly fine yesterday. I've tried cycling the key a few times, but no luck.

What are the common reasons for a 'crank no start' condition on a 2017 Pilot? Could it be a fuel pump, immobilizer, or something else entirely? Any troubleshooting tips would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 2:41 AM

0

ClearTheCode admin answer:

A 'crank no start' condition on your 2017 Honda Pilot, especially without immediate OBD-II codes, typically points to a fundamental issue with one of the three elements required for combustion: spark, fuel, or air. Since it was running fine yesterday, it's likely a sudden failure.

  1. The 'Big Three' Checks:
    • Fuel: Is the engine getting fuel? Listen for the fuel pump priming sound (a low hum from the rear of the vehicle) for a few seconds when you turn the key to the 'ON' position (before cranking). If you don't hear it, the fuel pump, fuel pump relay, or fuse could be at fault.
    • Spark: Is there spark at the plugs? This is harder to check without tools, but a lack of spark could be due to a faulty crankshaft position sensor, camshaft position sensor, ignition coils, or even the main relay.
    • Air: While less common for a sudden no-start, a completely blocked air intake could prevent starting. However, this usually comes with other symptoms.
  2. Common Causes for Crank No Start on Honda Pilot:
    • Fuel Pump Failure: A very common culprit. If you don't hear the pump prime, this is a strong suspect.
    • Main Relay (PGM-FI Main Relay): This relay powers the fuel pump and other critical engine components. If it fails, neither fuel nor spark might be present.
    • Crankshaft Position Sensor (CKP Sensor): If this sensor fails, the engine control unit (ECU) doesn't know when to fire the spark plugs or inject fuel, leading to a no-start. This often does throw a code eventually (P0335), but not always immediately.
    • Immobilizer System: If the key's transponder isn't recognized, the immobilizer will prevent the engine from starting. Look for a flashing green key light on the dashboard. Try a different key if you have one.
  3. DIY Checks:
    • Listen for Fuel Pump: Turn the key to 'ON' (not start) and listen for the hum.
    • Check Fuses: Consult your owner's manual for the location of the fuel pump fuse and the main relay fuse in both the under-hood and interior fuse boxes. Inspect them for continuity.
    • Try a Different Key: If the immobilizer light is flashing.

When to See a Shop:

  • If you've checked the basic fuses and listened for the fuel pump without success.
  • If you suspect a faulty sensor (CKP, CMP) or the immobilizer system, as these require specialized diagnostic tools to confirm and repair.
  • A professional can perform fuel pressure tests, spark tests, and scan for manufacturer-specific codes that generic scanners might miss.
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