P2170Exhaust Pressure Regulator Vent Solenoid Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2170 reports the control line of the exhaust pressure regulator vent solenoid pulled toward ground. Jaguar Land Rover uses it for the solenoid of the active exhaust valve; its March 2018 shop foreman call lists P2170-11, meaning the line is grounded, on 2018 Discovery Sport and Evoque with active exhaust. On 2018 and 2019 Evoque, Discovery Sport and E-Pace with the 2.0 Ingenium petrol, MIL and sometimes a restricted performance message appear. JLR suspected high resistance while the valve is switched and asks for a circuit check, a check that the flap moves freely by hand and that the heat shield sits centred on the valve; a cold-soak test in a freezer can reproduce a sticking valve. New PCM software cured unexpected valve operation (JLRTB02020NAS2) and drops the power limitation.
- What you may notice
- Check engine lamp on
- Restricted performance message on some models
- Exhaust valve heard clicking at start-up
- Likely causes
- LikelyPCM software with an overly sensitive fault strategy, fixed by an update
- PossibleExhaust flap stiff, often from a misaligned heat shield or cold weather
- PossibleControl wire chafed through to ground near the exhaust
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.