P2238 on 2007-2017 Toyota Camry (LE, SE, XLE, XSE, Hybrid) — O2 Sensor Positive Current Control Circuit Low (Bank 1 Sensor 1)
1 vehicles · 1 makes · $150-$350 repair
Most Reported On
P2238 is an OBD-II diagnostic trouble code meaning “O2 Sensor Positive Current Control Circuit Low (Bank 1 Sensor 1).” Generic code. The PCM detects a low-voltage condition in the positive current control (pumping current) circuit of the upstream wide-band A/F sensor on Bank 1, typically a short to ground or shorted heater/sensor element pulling the control circuit low. This code is most commonly reported on 2007-2017 Toyota Camry (LE, SE, XLE, XSE, Hybrid), with repair costs ranging from $150 to $350.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P2238, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
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- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
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- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does P2238 mean?
P2238 stands for "O2 Sensor Positive Current Control Circuit Low (Bank 1 Sensor 1)." Generic code. The PCM detects a low-voltage condition in the positive current control (pumping current) circuit of the upstream wide-band A/F sensor on Bank 1, typically a short to ground or shorted heater/sensor element pulling the control circuit low.
What are the most common causes of P2238?
The most common causes of P2238 are: Positive-current control wire shorted to ground, Internally shorted A/F (O2) sensor, Damaged wiring/connector, Corrosion creating a low-resistance path, Failed PCM driver. The specific cause varies by vehicle.
How much does it cost to fix P2238?
Repair costs for P2238 range from $150 to $350, depending on the vehicle and root cause.
Which vehicles are affected by P2238?
Au7o has documented P2238 across 1 vehicle models from 1 manufacturers: Toyota.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.