Possible causes – Faulty fuel injector 9– Fuel Injector 9 harness is open or shorted– Fuel injector 9 circuit poor electrical connection When is the code detected? The P0209 is set if the Engine Control Module (ECM) is detects a

Possible causes – Faulty Fuel Level Gauge– Fuel Level Gauge harness is open or shorted– Fuel Level Gauge circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the code detected? If the fault detection circuit senses a voltage

Possible causes – Faulty fuel pressure sensor– Faulty fuel pump– Fuel pressure sensor harness is open or shorted– Fuel pressure sensor electrical circuit poor connection– Blocked fuel filter– Fuel line restricted– Faulty fuel pressure regulator Tech notes There is a

Possible causes – Faulty fuel pump– Fuel line restricted– Faulty fuel pressure sensor– Fuel pressure sensor harness is open or shorted– Fuel pressure sensor electrical circuit poor connection– Faulty fuel pressure regulator Symptoms – Engine Light ON (or Service Engine

Possible causes – Faulty Fuel Pump– Fuel pump harness is open or shorted– Fuel pump circuit poor electrical connection– Faulty Fuel Pump Relay– Faulty fuel pump control module (if applicable) Symptoms – Engine Light ON (or Service Engine Soon Warning

Possible causes – Faulty Fuel Pump– Fuel pump harness is open or shorted– Fuel pump circuit poor electrical connection– Faulty Fuel Pump Relay– Faulty fuel pump control module (if applicable) Symptoms – Engine Light ON (or Service Engine Soon Warning

Possible causes – Faulty Fuel Temperature Sensor– Fuel Temperature Sensor harness is open or shorted– Fuel Temperature Sensor circuit poor electrical connection Tech notes Replaced Fuel Temperature Sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0188

Possible causes – Faulty Fuel Temperature Sensor– Fuel Temperature Sensor harness is open or shorted– Fuel Temperature Sensor circuit poor electrical connection When is the code detected? An excessively high voltage from the sensor is sent to ECM. Symptoms –

Possible causes – Faulty Fuel Temperature Sensor– Fuel Temperature Sensor harness is open or shorted– Fuel Temperature Sensor circuit poor electrical connection When is the code detected? An excessively low voltage from the sensor is sent to ECM. Symptoms –

Possible causes – Faulty Fuel Temperature Sensor– Fuel Temperature Sensor harness is open or shorted– Fuel Temperature Sensor circuit poor electrical connection When is the code detected? Rationally incorrect voltage from the sensor is sent to ECM, compared with the

Possible causes – Faulty Gear Lever X Position Sensor– Gear Lever X Position Sensor harness is open or shorted– Gear Lever X Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Gear Lever X-Y Position Sensor– Gear Lever X-Y Position Sensor harness is open or shorted– Gear Lever X-Y Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Gear Lever Y Position Sensor– Gear Lever Y Position Sensor harness is open or shorted– Gear Lever Y Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Glow Plug Control Module (GPCM)– GPCM harness is open or shorted– GPCM circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the code detected? The Engine Control Module (ECM) has detected a fault on

Possible causes – Faulty Glow Plug Control Module (GPCM)– GPCM harness is open or shorted– GPCM circuit poor electrical connection– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Lack/Loss of Power– The

Possible causes – Faulty Glow Plug– Glow Plug harness is open or shorted– Glow Plug circuit poor electrical connection When is the code detected? – The glow plugs are commanded OFF and the glow plug feedback is more than 2

Possible causes – Faulty Glow Plug– Glow Plug harness is open or shorted– Glow Plug circuit poor electrical connection When is the code detected? – The glow plugs are commanded OFF and the glow plug feedback is more than 2

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground– Heated Oxygen Sensor (H2OS)

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground– Heated Oxygen Sensor (H2OS) Bank

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 harness is open shorted to ground– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection– Heated Oxygen