PO208 Injector Circuit Malfunction Cylinder 8

[Kylie]

The above code came up, but some back ground info before hand.

Dont let Ferrari boys drive your motor -kidding, lambo owners are better A st gear change from dumping the clutch too quick gives a sharp jolt and twist in drive train feel, a few dash lights came on but then went away. He did the same thing again by mistake after I slapped him and this time lights on dash and loss of power. Went to start, fully cranked but no spark. I then activated the fuel reset switch thinking it might have told a sensor it was in an accident from the sudden jolt to cut fuel and it fired up and drove fine = result.

But just fired up the car this morning to get some data from the ECU and see what the check engine light is. After after a few minutes warm up (still half cold) out side air temps a balmy 25 deg c, the 02, sensors were typical and flicking from lean to rich, but the fuel to calculate air/fuel system 1 & 2 was in closed loop. I thought when cold should be open loop mode calculating from coolant temps. Hmmmm The trim 1 reading -4% - 9% No.2 5.4% Can someone shed some light here. RED race chip in here also to take into consideration.

Anyway potential failure modes, connectors, wire open short circuit, relay, injector control/fault, ecm injector circuit failed. So I guess I could start with easy stuff like relays?

Any trouble shooting info would be grand.

[peter_england99]

Hi Kylie,
This is what the service manual says:

Injector Circuit Malfunction PO201 - 0210

P0201 cylinder 1 (1)
P0202 Cylinder 2 (5)
P0203 Cylinder 3 (3)
P0204 Cylinder 4 (7)
P0205 Cylinder 5 (4)
P0206 Cylinder 6 (8)
P0207 Cylinder 7 (2)
P0208 Cylinder 8 (6)
P0209 Cylinder 9 (additional #l)
P0210 cylinder l0(additional #2)
Description: This is a circuit check, to see if an injector is in circuit.
Malfunction Criteria: Logic level low
Secondary enable conditions: Injector state off
Engine running
Disabled by faults: None
Time Required: 1 sec
Potential failure modes: - Connectors
- Wire open or short circuit
- Relay faulty; injector control
- Inertia switch disturbed (during maintenance or service)
- Injector fault
- ECM injector circuit failed
Limp Home: None
Note: These faults will be indicated with a ‘check engine’ light.
Early cars will have an alternative Code/Cylinder reference. This is
indicated above by the number in brackets: PO207 Cylinder 7 (2)


Since you mention that you had to press the Inertia switch after the incident. Hopefully, this error code is a result of this rather than a genuine wiring or injector issue.

I'd try and solicit more feedback/opinions from the likes of Mike Sekinger, WEllison, Gunter, etc.

Personally, based on the above I would clear the error code and restart. Hopefully, the error will not re-occur, as the Inertia Switch will not be triggered.

Regards,
Peter.

[Kylie]

Thank you Peter, ill clear it and see if comes back, just strange if it is the inertia switch, why its defaulted to the above code - is strange you would think it would have its own code. Ive put it to the troops on LEF also and mailed Rob C.

[Kylie]

Pete, for now I have cleared the code and hasnt come back = grand!! but I am yet to give it another road test and see if anything else raises it head. God I love these scan tools. Just dont know how you can own such a car without one.