P0222
High SeverityThrottle/Pedal Position Sensor B Circuit Low
Fuel System
What Does P0222 Mean?
TPS B voltage is too low.
Common Fix
Replace throttle body
Estimated Cost (DIY)
$100 - $250
Common Causes
How to Diagnose P0222
- 1Check TPS wiring
- 2Measure TPS B voltage
- 3Compare to TPS A
- 4Replace throttle body
OEM Diagnostic Flowchart
Scroll to load technician if/then branches.
Read live data and freeze frame for P0222 to pinpoint the cause before buying parts.
Related Resources
Repair guides, symptom pages, and wiring diagrams related to P0222.
OEM Manual Evidence
Browse →A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali AWD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali 2WD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL 4WD V8-6.0L Service Manual | Operation CHARM Operation CHARM : Car repair...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL 4WD V8-5.3L Service Manual | Operation CHARM Operation CHARM : Car repair...
Related Symptoms
Browse →Exact Vehicle Hubs
Browse →Open the exact vehicle hub grounded by OEM manual evidence related to P0222.
Open the exact vehicle hub grounded by OEM manual evidence related to P0222.
Open the exact vehicle hub grounded by OEM manual evidence related to P0222.
Open the exact vehicle hub grounded by OEM manual evidence related to P0222.
Related Codes
The secondary TPS (sensor B) has a circuit fault. Modern drive-by-wire systems use two TPS for redundancy.
TPS B voltage is above maximum expected.
TPS voltage is below minimum threshold. The ECM cannot determine throttle position accurately.
Frequently Asked Questions
- Why does my car go into limp mode?
- When TPS A and TPS B disagree, the ECM cannot trust throttle position, so it limits power to prevent unintended acceleration.
- Is P0222 expensive?
- If the throttle body needs replacement, expect $100-$250 DIY. Some vehicles allow TPS-only replacement for less.

