P1647 Code - HO2 Sensor Control Malfunction Bank 2 Upstream
Quick Answer
P1647 indicates HO2 Sensor Control Malfunction Bank 2 Upstream. Common causes include Faulty Upstream HO2 Sensor Bank 2, Upstream HO2 Sensor Bank 2 harness is open or shorted, Upstream HO2 Sensor Bank 2 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1647 indicates HO2 Sensor Control Malfunction Bank 2 Upstream.
- Common causes
- Common causes include Faulty Upstream HO2 Sensor Bank 2, Upstream HO2 Sensor Bank 2 harness is open or shorted, Upstream HO2 Sensor Bank 2 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1647 Description
What are the Possible Causes of the DTC P1647?
- Faulty Upstream HO2 Sensor Bank 2
- Upstream HO2 Sensor Bank 2 harness is open or shorted
- Upstream HO2 Sensor Bank 2 circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P1647?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1647 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1647 code?
Need more information on how to fix the P1647 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1647 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1647 Buick — Driver 1 Line 7
- P1647 Cadillac — Driver 1 Line 7
- P1647 Chevrolet — Driver 1 Line 7
- P1647 Ford — Linear O2 Sensor Control Chip Bank 2
- P1647 GMC — Driver 1 Line 7
- P1647 Honda — Engine Speed Signal Circuit Problem
- P1647 Hyundai — Threshold 1 Voltage Malfunction
- P1647 Jaguar — HO2 Sensor Control Malfunction Bank 2 Upstream
- P1647 Lexus — Transmission Control Module System Malfunction
- P1647 Lincoln — Linear O2 Sensor Control Chip Bank 2
- P1647 Mercury — Linear O2 Sensor Control Chip Bank 2
- P1647 Toyota — Transmission Control Module System Malfunction
Frequently Asked Questions about P1647 Code
No Frequently Asked Questions about P1647 Code found.
Discuss the causes and fixes for P1647 OBDII Code
Code P1647 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
