P2A2E: Alternative Fuel Tank Shutoff Valve E Control Circuit/Open

What it means

The control circuit of alternative fuel tank shutoff valve E reports a control circuit/open condition. Tank isolation cannot be commanded as expected on multi-tank CNG/LPG systems.

At a glance

• Usually lights the check-engine light
• Affects emissions; the car can fail an emissions test
• The engine or gearbox may go into limp mode

How it works

Shutoff valve E is the electrically controlled isolation valve for tank E in a multi-tank CNG or LPG system. The control module checks for a complete E control circuit when it commands the valve. This code sets when that path appears open, such as from a broken wire, an open coil, or a connector pin pushed out of position.

Common causes

Most likely first.

1. Open in valve control wire
2. Open valve coil
3. Pin pushed back out of connector body

Symptoms

• Check-engine light
• Alternative-fuel warning light
• Difficulty switching fuel modes

How to diagnose it

1. Save freeze-frame data and check whether the open-circuit fault returns when a scan tool commands valve E.
2. Inspect valve E's connector for a pushed-back pin, corrosion, or poor fit, then examine its harness for breaks or damage.
3. With the system disabled as specified by the manufacturer, check continuity through the valve E control circuit.
4. Measure valve E's coil against the manufacturer's specification to determine whether it is open.
5. If the coil and wiring are intact, check the control-module output using the vehicle's approved procedure.

Common fixes

• Reseat a backed-out valve E connector pin and secure the connector.
• Repair an open or damaged valve E control wire.
• Replace valve E if its coil is open.
• Repair the control-module circuit if testing confirms an output fault.

Can I keep driving?

Tank E may not be isolatable, which can limit fuel switching or tank availability. Follow the vehicle's alternative-fuel warnings and stop using that fuel if the system reports it is unavailable.