Nephew's 04 Jetta 2.0 auto. Throws codes p0321 and p2177. 0321 is engine speed sensor Engine Speed Sensor (G28): Implausible Signal 2177 is: Bank 1; System Too Lean off Idle Engine cranks, won't start. He limped it home a couple days ago after having problems starting. Replaced crank sensor with a non-bosch one he bought. No change. Fuel pump doesn't fire up when the key is turned. Tested pins in the connector for the fuel pump. Only got 9.25V when cranking, not 12. Not 100% sure I was doing this right, but between the power and ground on the pump, multimeter set to 20 ohms, saw no change from 1.0 when testing resistance between them. I'm thinking fuel pump relay, since the crank position sensor didn't do anything, and it's only reading 9.something volts when cranking. Thoughts? Coil, plugs, wires replaced last year.