P212B: Throttle Position Sensor/Switch G Circuit Range/Performance

P212B means throttle signal G is electrically valid but its value does not fit. GM's 2023 table 23OBDG07 applies it to sensor 2 of the bank 2 throttle body on a twin-throttle engine: the code sets when the angle derived from sensor 2 differs from that of sensor 1 by more than about 5-6.25 %, or from the angle modelled from manifold pressure by more than 9 %, in one trip; the 2024 table repeats the check. Nissan uses P212B on the 2021-2023 Rogue with the 1.5 L KR15DDT engine; bulletin NTB23-021 cures a lit MIL without drivability complaints by ECM reprogramming. Circuit faults are P212A and P212C-P212E. Depending on the cause the engine may run normally or limit power.

Symptoms

• MIL on, often without noticeable driving problems
• Reduced power if the plausibility fault persists
• Uneven idle on twin-throttle engines

Most likely causes

• ECM software setting the code without a real fault (update available)
• Sensor G drifted or worn, disagreeing with its partner sensor
• Deposits or sticking plate making the angle disagree with airflow
• Contact resistance at the throttle body connector

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the pedal and throttle connectors
2. Compare the reading with other engine data while varying the engine speed.
3. Use live data to confirm that both sensors rise smoothly and consistently
4. Clean the throttle if it has carbon buildup
5. Run the relearn procedure with the scanner if the manufacturer requires it
6. Replace the part identified by the diagnosis

Good to know

• Repair difficulty: medium
• It can trigger limp mode.
• It affects emissions.

What each character of P212B means

• P: Powertrain: engine and transmission
• 2: Generic code: same on every make
• 1: Air and fuel
• 2B: Specific fault in that system

Frequently asked questions

Can I keep driving with code P212B?

Be careful: the car may suddenly lose power. If it goes into limp mode, get off the highway and calmly make your way to a repair shop.

What causes code P212B?

The most common causes are: eCM software setting the code without a real fault (update available); sensor G drifted or worn, disagreeing with its partner sensor; deposits or sticking plate making the angle disagree with airflow.

Related codes

• P212AThrottle Position Sensor/Switch G Circuit
• P212CThrottle Position Sensor/Switch G Circuit Low
• P212DThrottle Position Sensor/Switch G Circuit High
• P212EThrottle Position Sensor/Switch G Circuit Intermittent
• P212FThrottle/Pedal Position Sensor/Switch F/G Voltage Correlation
• P2135Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation

Sources

• gsi.ext.gm.com: 23OBDG07
• gsi.ext.gm.com: 24OBDG07
• static.nhtsa.gov: MC 10234083 0001

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.