What Does P0122 Mean on a 2022 Toyota Camry?
Your 2022 Toyota Camry has stored P0122 because the Engine Control Module detected the Throttle Position Sensor A circuit voltage has dropped below approximately 0.2 volts — the minimum acceptable boundary of the normal 0.5 to 4.5-volt operating range. This is a hard circuit fault, not a sensor drift or performance issue. It means the ECM has lost reliable throttle position data and has taken protective action, placing the Camry into a restricted operating mode.
The 2022 Camry is an 8th generation model (XV70 platform), powered by either a 2.5L Dynamic Force 4-cylinder (203 hp), a 3.5L V6 (301 hp) available in XSE and XLE V6 trims, or a 2.5L hybrid system. The drive-by-wire electronic throttle control system is consistent across all engine options, and the TPS sensor is integrated into the throttle body assembly on all variants. It cannot be replaced as a standalone component.
At 3 years of age, your 2022 Camry sits in a transitional warranty zone: the 3-year/36,000-mile bumper-to-bumper warranty may have expired (if over 36k miles), but the 5-year/60,000-mile powertrain warranty and the 8-year/80,000-mile federal emissions warranty likely remain active. Verifying your warranty status is a critical first step before authorizing any paid repairs.
Symptoms of P0122 on the 2022 Camry
P0122 produces symptoms that range from annoying to genuinely dangerous depending on driving conditions:
- Check engine and VSC warning lights: The Malfunction Indicator Lamp illuminates immediately. The Vehicle Stability Control warning may activate as the ECM's confidence in throttle data drops.
- Throttle restriction and limp mode: The ECM caps engine output significantly. On the 3.5L V6 — which normally launches the Camry with authority — this power restriction is especially noticeable.
- Rough or unsteady idle: The engine may hunt for idle speed, particularly on cold starts. Some drivers report the engine almost stalling when coming to a stop in traffic.
- Hesitant or surging acceleration: Throttle response becomes unpredictable. The engine may hesitate on initial input or surge unexpectedly as the ECM attempts to interpret degraded TPS data.
- Transmission hesitation: The 8-speed automatic (on V6 models) and CVT or 8-speed (on 4-cylinder) models use TPS data for shift timing. Corrupted data causes hesitant or rough shifts.
- Intermittent fault before permanent code: Many owners report episodes of brief hesitation or momentary power loss weeks before P0122 stores permanently. These are the first clues pointing to a developing circuit fault.
Most Likely Causes on a 2022 Camry
At 3 years old, the cause profile begins shifting from production defects toward early wear and environmental exposure:
- Throttle body connector corrosion or degraded contact (40-42% likelihood): Three years of thermal cycling, humidity, and engine bay vibration can cause the connector terminals to develop oxidation or micro-fretting that increases resistance and drops the signal voltage. This is the most cost-effective first investigation step.
- TPS internal failure within the throttle body (30-33% likelihood): The TPS resistive element inside the throttle body can develop an internal fault — a short circuit or open — that sends a persistently low voltage signal. At this age, this is the second most likely cause and requires throttle body replacement.
- Wiring harness damage (15-17% likelihood): Harness chafing against engine brackets or heat shields can develop over three years of vibration. A pinpoint test tracing the signal wire from the throttle body back to the ECM connector will identify any short to ground or open circuit.
- ECM 5-volt reference circuit fault (8% likelihood): The ECM supplies a 5V reference to the TPS. A developing fault in the ECM or a short to ground on the reference wire will cause low TPS output across multiple sensors simultaneously. Toyota Techstream can monitor the 5V ref in real time.
- Moisture intrusion (2% likelihood): Carwash exposure, driving through deep puddles, or a failed connector boot can allow water into the throttle body connector, causing a temporary or persistent short.
Repair Costs for the 2022 Camry
Here is what it costs to solve this case, depending on root cause:
- Connector cleaning and reseating: $50-$150 — A technician inspects, cleans with electrical contact cleaner, applies dielectric grease, and reseats the connector. If this resolves the code, total cost is minimal.
- Throttle body replacement (2.5L 4-cyl): $310-$530 — OEM throttle body $160-$270, labor 1.5-2 hours at $80-$130/hour. Independent shops typically charge 15-25% less than Toyota dealers.
- Throttle body replacement (3.5L V6): $330-$560 — Slightly higher parts cost for the V6 assembly; labor similar.
- Throttle body replacement (2.5L hybrid): $320-$540
- Wiring harness repair: $150-$350
- ECM diagnosis and repair: $200-$500+
After any throttle body work, the ECM must relearn the throttle body position. Toyota's relearn procedure involves using Techstream to perform an initialization, or following the manual procedure: key ON without starting for several seconds, then start and idle until the engine reaches operating temperature.
Warranty and Urgency Guidance
Check your warranty status immediately. If your 2022 Camry is under 60,000 miles, the powertrain warranty covers throttle body and ECM components. Under 80,000 miles, the federal emissions warranty (which covers TPS-related faults as emissions-affecting components) applies. Contact a Toyota dealer with your VIN to verify active coverage before paying for any repair.
P0122 demands immediate attention. Do not drive the Camry in a restricted throttle state for daily commuting, highway travel, or any situation requiring confident acceleration. The safety risk is real and avoidable.
How AutoDetective AI Can Help
AutoDetective's diagnostic AI can cross-reference your 2022 Camry's P0122 code against its Toyota XV70 platform fault database, identify likely causes by engine variant, and check for active TSBs. Enter your VIN for a free diagnosis and warranty status report.