C1922 – Tire air pressure low – tire 2 (Mitsubishi)

Mitsubishi-specific code — factory diagnostic data

Last updated: March 30, 2026

Definition source: Mitsubishi factory description · Autel MaxiSys Ultra & EV. Diagnostic guidance is based on factory-defined fault logic for this code.

C1922 means your 2016 Mitsubishi Outlander has detected low tire air pressure for “tire 2.” You will usually see a TPMS warning, and the vehicle may display a tire pressure message. Driving on an underinflated tire can reduce braking performance and stability. It also increases heat and tire damage risk. According to Mitsubishi factory diagnostic data, this is a manufacturer-specific code defined as “Tire air pressure low – tire 2.” Manufacturer-specific chassis codes can vary by Mitsubishi platform. Always diagnose using the scan tool description and the vehicle’s TPMS data, not the code number alone.

🔍Decode any Mitsubishi Outlander VIN — free recalls, specs & safety ratings — free VIN decoder with NHTSA data

C1922 Quick Answer

C1922 sets when Mitsubishi’s TPMS logic decides tire 2 is below the learned low-pressure threshold. Confirm the actual pressure with a known-good gauge, then verify the scan tool shows the same tire reporting low.

What Does C1922 Mean?

Official definition: “Tire air pressure low – tire 2.” In plain terms, the TPMS system believes one specific tire is underinflated. In practice, treat this as a safety-related warning first. Verify inflation and inspect for a leak before you chase electronics.

What the module is checking: The TPMS receiver and related control logic monitor pressure values sent by the in-wheel pressure sensor(s). When the reported pressure for the sensor the system labels as “tire 2” stays low long enough, the module stores C1922. Why it matters: This DTC points to a “low pressure condition” as the suspected trouble area. It does not prove a failed sensor. You must confirm the tire’s real pressure and the sensor’s reported pressure agree.

Theory of Operation

Under normal operation, each wheel-mounted TPMS sensor measures pressure and temperature. The sensor transmits an ID and pressure data by radio signal. The vehicle receives that data and assigns it to a tire position using Mitsubishi’s stored IDs and location logic.

C1922 sets when the system sees tire 2 reporting pressure below the warning limit. A real leak causes most cases. A sensor that reports an incorrect low value can also trigger it. ID registration issues can mislabel which tire the system calls “tire 2,” so always confirm tire position using live TPMS data.

Symptoms

You will usually notice a tire pressure warning first, then supporting TPMS messages or data issues.

• TPMS warning TPMS lamp on, sometimes with a “low tire pressure” message
• Driver feel Pulling, soft steering response, or a “squirmy” feel if the tire is truly low
• Visible condition One tire looks low or the sidewall bulges more than the others
• Inflation loss Tire needs frequent top-offs, especially after temperature changes
• Live data Scan tool shows “tire 2” reading lower than the other tires
• Intermittent warning Lamp comes and goes after driving, then returns the next trip
• Post-service event Code appears after tire rotation, wheel swap, or sensor service

Common Causes

• Actual low tire inflation pressure on tire 2: A real pressure drop below the TPMS warning threshold triggers the low-pressure logic for that tire ID.
• Slow leak at the valve core or valve stem: A leaking core or stem bleeds pressure over days and sets the code after the sensor reports repeated low readings.
• Tire puncture or bead leak: A nail, sidewall damage, or a poor bead seal causes continuous pressure loss that the TPMS registers as low pressure.
• Recent temperature drop or altitude change: Pressure falls with ambient temperature and can cross the threshold without a puncture, especially after an overnight cold soak.
• Incorrect tire pressure set after service: Underinflation after rotation, repair, or seasonal tire change causes the system to flag that tire position or learned ID as low.
• TPMS sensor ID-to-position mismatch after rotation: Some Mitsubishi platforms require a relearn or position initialization; a mismatch can make “tire 2” refer to a different wheel than expected.
• Intermittent TPMS sensor transmission or internal fault: A weak sensor or internal pressure transducer drift can report implausible low pressure and set the low-pressure DTC.
• Receiver/antenna or wiring issue affecting one tire’s signal: Poor antenna connection, corrosion, or harness damage can corrupt the received pressure value for one learned sensor ID.

Diagnosis Steps

You need a scan tool that reads Mitsubishi TPMS data and DTC detail, plus a quality tire pressure gauge you trust. Keep an air source handy to correct pressures. Use a TPMS trigger tool if available, but do not rely on it alone. A DMM helps for power and ground checks if the TPMS receiver circuit needs verification.

1. Confirm DTC C1922 in the TPMS/ABS chassis system and record DTC status. Save freeze frame data if the tool provides it. Focus on ignition state, vehicle speed, and battery voltage at set time. Those conditions tell you when the module decided “tire 2” went low.
2. Before any meter work, do a fast visual and service-history check. Verify recent rotation, tire replacement, puncture repair, or wheel swap. Inspect the “tire 2” wheel area for obvious damage, missing valve cap, and a bent or cracked valve stem.
3. Check fuses and power distribution that feed the chassis/ABS/TPMS electronics. Verify the related fuse circuits carry load, not just continuity. A marginal feed can create erratic TPMS behavior and false readings.
4. Verify module power and ground integrity under load with voltage-drop testing. Load the circuit by commanding an actuator self-test if available, or by key-on module operation. Keep ground drop under 0.1V with the circuit operating. Do not trust an unloaded 12V reading or a simple continuity check.
5. Use the scan tool to view live TPMS data and identify which sensor ID corresponds to “tire 2.” Compare the reported pressure and temperature to the other three tires. If the platform displays only “tire 2” without a corner, treat it as an ID-based designation and confirm by data, not assumption.
6. Measure all four tires with a known-good mechanical gauge and compare readings to scan tool values. Correct pressures to the placard specification on the driver door jamb. If one tire reads low on the gauge, treat it as a real pressure concern first and continue with leak checks.
7. If the tire truly runs low, perform a leak check at the valve core, valve stem base, bead area, and tread. Use soapy water and look for steady bubbling. Repair the leak and recheck after reinflation. This step confirms the root cause instead of chasing electronics.
8. If the gauge shows normal pressure but the scan tool shows low for “tire 2,” verify sensor plausibility. Trigger the suspect sensor with a TPMS tool if available and watch if the pressure updates cleanly. If the value lags, drops out, or updates with implausible changes, suspect a sensor signal issue or an ID/position mismatch.
9. Check for TPMS-related companion DTCs and review network/module scan results. If the scan tool shows intermittent receiver faults or missing data for one ID, inspect receiver/antenna connectors and nearby harness routing for water intrusion, corrosion, or pin fit issues. Reseat connectors and verify terminal tension before replacing parts.
10. If the vehicle had a rotation or wheel swap, confirm the Mitsubishi-required initialization or relearn procedure. Perform the correct TPMS registration/position initialization if the platform requires it. Then road test to allow the system to update and reassess “tire 2” mapping.
11. Clear DTCs and perform a confirmation drive under similar conditions to the freeze frame. Use a scan tool snapshot during the drive to capture live pressure changes if the issue acts intermittent. Freeze frame shows when the fault set; a snapshot helps you catch the fault happening again.
12. Recheck for pending versus confirmed status after the drive. Some faults show as pending first and confirm after additional drive cycles. A hard low-pressure condition usually returns quickly once the module receives updated sensor data. Confirm the repair only when the code stays cleared and pressure data remains stable.

Professional tip: Do not guess what “tire 2” means by wheel position. On Mitsubishi systems, the module often tracks sensor IDs that may not match the current corners after rotation. Use live data to identify the odd sensor ID first, then match it to the physical wheel by temporarily adjusting pressure in small controlled steps and watching which sensor value changes.

Possible Fixes

• Set tire pressures to the placard specification and verify stability: Inflate correctly, then confirm the TPMS data matches a trusted gauge after the module updates.
• Repair the leak and retest: Replace the valve core, reseal the bead, or repair/replace the tire as required, then confirm no pressure loss over time.
• Perform TPMS initialization/relearn after rotation or wheel service: Register sensor IDs or complete the Mitsubishi position learning procedure, then confirm “tire 2” aligns with the correct sensor.
• Correct connector or harness faults at the receiver/antenna circuits: Clean corrosion, repair damaged wiring, and verify pin fit, then confirm stable TPMS reception on a road test.
• Replace the TPMS sensor only after plausibility tests fail: If one sensor repeatedly reports low with verified correct pressure and good reception, replace that sensor and re-register it as required.
• Address module power/ground issues found by voltage-drop testing: Repair high-resistance grounds or feeds so the chassis electronics maintain stable operation and data processing.

Can I Still Drive With C1922?

You can usually drive a 2016 Mitsubishi Outlander with C1922, but you must treat it as a tire-safety warning first. This Mitsubishi manufacturer-specific code points to “tire air pressure low – tire 2.” Low pressure can reduce grip, increase stopping distance, and heat the tire. That heat can lead to a rapid loss of air. Before any extended driving, check all four tires with a quality gauge and set pressure to the door-jamb label. Inspect for a nail, sidewall damage, or a leaking valve stem. If the tire loses pressure again, limit speed and distance and repair the leak.

How Serious Is This Code?

C1922 ranges from minor to urgent, depending on how low the tire pressure actually. If the tire reads only slightly low and holds pressure, you can treat it as an inconvenience and a maintenance reminder. If the tire reads very low, drops pressure quickly, or the vehicle pulls or vibrates, treat it as a safety issue. A severely underinflated tire can overheat and fail without warning. This code does not prove a bad TPMS sensor. The module only flags a low-pressure condition for a specific tire identifier. Confirm pressure with a manual gauge and compare it to scan-tool TPMS data before you plan repairs.

Common Misdiagnoses

Technicians often replace a TPMS sensor because they see a TPMS-related DTC and a warning lamp. That wastes time when the tire truly has low pressure from a puncture, bead leak, or valve core leak. Another common mistake involves assuming “tire 2” equals a specific wheel position. Mitsubishi numbering can vary by platform, tire rotation history, and sensor registration order. Shops also miss slow leaks because they inflate the tire and clear codes without a leak check. Avoid that. Verify actual pressure with a gauge, then verify the sensor’s reported pressure and ID on the scan tool, and only then consider sensor, wiring, or module faults.

Most Likely Fix

The most frequent confirmed repair direction involves correcting the tire’s inflation and fixing the underlying air loss. That usually means repairing a puncture, replacing a leaking valve core, cleaning and resealing a corroded bead, or replacing a damaged valve stem. After that, confirm the TPMS data matches the gauge and complete the Mitsubishi TPMS learn or initialization if required on your platform. Do not treat sensor replacement as the default. Verify the suspected tire’s sensor reports stable pressure and temperature, and verify the ID registers correctly in the TPMS system before you replace parts.

Repair Costs

Repair cost depends on whether the confirmed root cause is wiring, connector condition, a sensor, a module, or the labor needed to diagnose the fault correctly.