P2B60: Engine Coolant Flow Control Valve Position Sensor Circuit Range/Performance

P2B60 checks whether the valve actually goes where it is told. On GM's 3.0 L Duramax the code sets when the gap between desired and measured position exceeds 12 % in 160 of 200 samples, only with a steady command, closed-loop control active and no coolant or outside temperature sensor fault (Type B). For LM2 trucks and SUVs GM issued 20-NA-039 and 22-NA-082 (ECM software), PIP5764 (corroded terminals at the centre actuator connector) and PIP5791, which has the valve swept from 25 to 95 % with GDS2 and then relearned. Hyundai and Kia link P2B60 to the cleaning routine of the ITM module on 1.6 T-GDI engines (23-EE-002H, 24-FL-003H, Kia ELE 285) and fix it with software.

Symptoms

• MIL on after two drives
• Engine temperature fluctuates or warms up slowly
• Often no driveability complaint beyond the warning lamp

Most likely causes

• Engine control software (GM 20-NA-039 / 22-NA-082, Hyundai/Kia ITM logic)
• Corroded terminals at the valve actuator connector (GM PIP5764)
• Valve sluggish or not learned, needs a relearn after test
• Valve does not follow commands although wiring is fine

What to check, in order

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

1. With the engine cold, check the coolant level; never do this when the system is hot
2. Compare the reading with other engine data while varying the engine speed.
3. Check the actual temperature in live data
4. Make sure the fan comes on when it should
5. Check the thermostat and connector
6. Measure the sensor and replace it if its readings do not make sense

Good to know

• Repair difficulty: medium
• It affects emissions.

What each character of P2B60 means

• P: Powertrain: engine and transmission
• 2: Generic code: same on every make
• B: Subsystem depends on the code range
• 60: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2B60?

Watch the temperature gauge. If it climbs or a warning appears, stop the car in a safe place and turn off the engine: overheating can cause serious damage.

What causes code P2B60?

The most common causes are: engine control software (GM 20-NA-039 / 22-NA-082, Hyundai/Kia ITM logic); corroded terminals at the valve actuator connector (GM PIP5764); valve sluggish or not learned, needs a relearn after test.

Related codes

• P2B5EEngine Coolant Flow Control Valve Position Sensor Circuit Low
• P2B5FEngine Coolant Flow Control Valve Position Sensor Circuit High
• P2B61Engine Coolant Flow Control Valve Stuck Closed
• P00B7Engine Coolant Flow Low/Performance

Sources

• gsi.ext.gm.com: 25OBDG04B
• static.nhtsa.gov: MC 10184132 9999
• static.nhtsa.gov: MC 10190421 9999
• static.nhtsa.gov: MC 10172812 9999

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.