Free API
Back to 2019 Toyota RAV4
Help
2019 TOYOTA RAV4
2.5L I4 (A25A-FKS, Dynamic Force)•FWD•AUTOMATIC•gas•M20A-FKS
7 active safety recalls on this vehicle — view recalls
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
Repairs396Labor479Torque363Fluid7DTC1640Battery1Maintenance0Recalls7
P0389moderate severityPowertrain

Auxiliary/Secondary Knock Sensor 2 Circuit Intermittent

on 2019 Toyota RAV4 2.5L I4 (A25A-FKS, Dynamic Force) · FWD

What this code means

The PCM sees an intermittent or erratic signal from the second knock sensor circuit. The problem may come and go with vibration or temperature changes.

Symptoms

  • Intermittent check engine light
  • Occasional power loss
  • Random engine pinging

Common causes

  • Loose or corroded connector
  • Chafed sensor wiring
  • Faulty knock sensor 2
  • Loose sensor mounting

Diagnostic steps

  1. Retrieve stored and pending codes
  2. Wiggle-test sensor wiring while monitoring
  3. Inspect sensor torque and mounting surface
  4. Repair harness or replace sensor as needed
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITE
Shop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Other Powertrain codes on this vehicle

🔌 Need this data in your app? It's all in the free API →
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
Stuck on this repair? Take it to The Diag Desk — ask a master tech about this exact car → real human answer within 24h, never AI
Share:XRedditFBWhatsAppThreadsEmail
⚠ STILL BEHIND THE PAYWALL
The 2019 Toyota RAV4 repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.
The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.
Sponsor the Toyota RAV4 — $99 →
Building an app?
Free API access to all this data — 10 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →