What does code p1113 indicate on vauxhall astra?

Answer 1

P1113 Port Deactivation Position Sensor Circuit High Voltage . (as per TIS) there are 2 possible codes one for hi volts and one for lo volts, check all your wiring and the connector on the B1_Y21B Sensor - Twinport Position
Wiring harness connector (underneath the inlet manifold)

P1113 code Vauxhall, I have this as the Port Deactivation Position Sensor.

This is a 3 pin sensor mounted to the inlet manifold twinport rail so the ECU can determine the flaps position.

The sensor is tucked up under the manifold and is a little tricky to get to.

It is also essentially the same sensor as the TPS used in older pre-electronic throttle control Vauxhalls such as single point injection Astra-F and Corsa-B models.

Not had one fail yet, but of course it could be At Fault.

I have seen the wiring for it chafed through on the actuating rail from poor LPG installations, including the standard Vauxhall conversion! If fitted.

I would also be checking for seized/worn flaps or rail disconnection.

Incidentally, the lower inlet manifold section (incorporating flaps) comes with a pre-installed sensor.

The sensor is mounted at the opposite end of the manifold to the actuating solenoid but it is not clearly marked.

When ordering don't be surprised that it is a complete manifold that they offer you, complete with everything. Not sure of price but I think it's around £80.00.