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This is the Bank 2 mirror of P0010. P0020 is an electrical/circuit code on the intake side of Bank 2 (the bank opposite cylinder 1 on most V-engines). A multimeter ohm-test of the solenoid (typically 6–12Ω) usually pinpoints the fault in under 10 minutes. See multimeters on Amazon ↑
🗺️ Where Is the Problem?
Blueprint view - P0020 electrical fault at the Bank 2 intake VVT/OCV solenoid circuit
These are statistical causes across ALL vehicles - your exact car may rank differently
For example, on a Honda 4-cyl the downstream O2 sensor causes P0020 64% of the time, but on a GM 5.3L V8 the catalytic converter is the cause 71% of the time. Get a probability ranking built specifically for your year, make, model, and mileage.
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🎯 Top Causes & Probability
85%
#1 - Most Likely
Failed Intake OCV Solenoid (Bank 2)
The intake camshaft oil control valve on Bank 2 has failed open or shorted internally. Heat, oil contamination, and miles eventually break down the coil. Out-of-spec resistance confirms it; replacement is straightforward on most engines.
🔩 Part
$50–$180
👨🔧 Labor
$60–$160
⚡ DIY Difficulty
Easy
15%
#2 - Check First
Damaged Wiring or Connector at OCV
A chafed harness, corroded pins, or a melted connector at the Bank 2 intake OCV is common - the connector often sits in a hot, oily area. Wiggle-test it while watching live data; pin-fit and continuity checks confirm.
🔩 Part
$10–$60
👨🔧 Labor
$60–$120
⚡ DIY Difficulty
Easy
5%
#3 - Less Common
PCM Driver Circuit Failure
Rare but possible - the PCM's internal driver for the Bank 2 intake OCV has failed. Always confirm the solenoid and harness first. PCM repair or replacement is the fix.
🔩 Part
$300–$1,200
👨🔧 Labor
$80–$200
⚡ DIY Difficulty
Hard
🚗 Most Affected Vehicles
🔧 Step-by-Step Diagnosis
- Verify the code & identify Bank 2 - Use an OBD2 scanner to confirm P0020 and check freeze-frame data. Bank 2 is the bank that does not contain cylinder 1 - consult a service diagram if your engine layout is unfamiliar.
- Resistance-test the intake OCV solenoid - With the solenoid unplugged, measure across its two terminals. Spec is typically 6–12 ohms (verify on factory data). Open or out-of-spec means replace the solenoid.
📍 Find a Trusted Shop Near You
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Tips for Choosing a Shop
- Ask if they charge a diagnostic fee and whether it applies toward the repair
- Request a written estimate before approving any work
- Ask specifically about the part brand - OEM vs. aftermarket matters for this code
- Check Google reviews for recent mentions of the specific repair you need