P0463
The fuel level sensor signal is higher than its normal range
Severity: MonitorFuel pump and injectors codes
The fuel pump in the tank supplies fuel, often through a separate pump control module, and the injectors spray it into the engine on command from the engine computer. The computer also reads fuel level and, on some engines, fuel temperature. Codes here are mostly about the electrical side of those parts; whether the engine actually gets enough fuel shows up in fuel trim and fuel pressure codes.
How these codes differ
- Injector circuit codes (P0201 to P0208, one per cylinder, and P0200 for the injector circuit in general) mean the computer saw a wiring or coil fault on that injector's control circuit. They point to the injector, its connector and its wire, and usually come with a misfire on the same cylinder.
- Fuel pump circuit codes (P0230 for the pump primary circuit, P0627 to P0629 for the pump control circuit, and the P2630s on some vehicles) concern the electrical drive to the pump. A pump that gets low voltage through a corroded connector or a weak ground underperforms and can test like a failed pump, so a voltage drop test comes before a new pump.
- Fuel level sensor codes (P0460 to P0464) affect the fuel gauge and also matter to the emissions system, because OBD rules let some tests pause when the tank is nearly empty and require the level sensor to be checked for a reading that is stuck.
- Fuel temperature sensor codes (the P0180s) concern a sensor some engines use to correct fuel quantity. On their own they rarely change how the car drives.
Codes that show up together
- A fuel pump code with low fuel pressure (P0087) or lean codes (P0171, P0174): check the pump's power and ground with a voltage drop test (under 0.2 volt on each side) before replacing the pump, because a poor circuit starves a good pump.
Fuel pump and injectors codes
P129F
On GM vehicles, the fuel pump power control module reports that the fuel pump speed signal is incorrect
Severity: Inspect soonP008A
Pressure in the low-pressure fuel system (lift pump side) is too low
Severity: Inspect soonP0462
The fuel level sensor signal is lower than its normal range
Severity: MonitorP0464
The fuel level sensor signal changes erratically or drops out in a way a real fuel level can't
Severity: MonitorP0627
Fuel pump A control circuit open
Severity: Inspect soonP069E
Fuel pump control module requested MIL illumination
Severity: Inspect soonP2635
The engine computer has found that fuel pump A isn't delivering the flow or pressure it is being commanded to deliver
Severity: Inspect soonP018B
Fuel pressure sensor B not reading plausibly
Severity: Inspect soonP023F
Fuel pump control circuit fault
Severity: Inspect soonP228D
Fuel rail pressure higher than commanded
Severity: Inspect soonP0002
Fuel volume regulator circuit out of range or not performing
Severity: Severity not verifiedP0090
Fuel pressure regulator control circuit fault
Severity: Inspect soonP018C
Second fuel pressure sensor signal too low
Severity: Inspect soonP0193
Fuel rail pressure sensor signal too high
Severity: Inspect soonP0460
Fuel level sensor circuit fault
Severity: MonitorP0461
Fuel level signal not changing as expected
Severity: MonitorP2293
Fuel pressure regulator 2 not performing as expected
Severity: Inspect soonP0201
The engine computer has detected an electrical fault in the cylinder 1 fuel injector circuit
Severity: Inspect soonP0203
The engine computer has detected an electrical fault in the cylinder 3 fuel injector circuit
Severity: Inspect soonP025A
The engine computer has detected an open or faulty control circuit for the fuel pump module
Severity: Inspect soonP0007
Fuel shutoff valve A control circuit reading high
Severity: Severity not verifiedP0204
Cylinder 4 fuel injector circuit fault
Severity: Inspect soonP0207
Cylinder 7 fuel injector circuit fault
Severity: Inspect soonP107B
On Toyota and Lexus hybrids, fuel rail pressure sensor B reads out of range
Severity: Severity not verifiedP12A6
On Chevrolet, the fuel pump enable circuit voltage is not performing as expected
Severity: Inspect soonP0091
Fuel pressure regulator control circuit reading low (direct-injection fuel pump)
Severity: Inspect soonP0230
Fuel pump relay control circuit fault
Severity: Inspect soonP2285
Injector control pressure sensor circuit reading low (diesel)
Severity: Inspect soonP016F
Closed-loop fuel pressure control has run out of range with pressure too low
Severity: Severity not verifiedP0202
Fuel injector circuit fault on cylinder 2
Severity: Inspect soonP0176
Fuel composition sensor circuit fault
Severity: Severity not verifiedP0178
Fuel composition sensor signal is lower than the computer expects
Severity: MonitorP0179
Fuel composition sensor signal is higher than the computer expects
Severity: MonitorP0180
Fuel temperature sensor A circuit has a fault the computer can detect
Severity: MonitorP0181
Fuel temperature sensor A signal is out of the range the computer expects
Severity: MonitorP0182
Fuel temperature sensor A signal is lower than the computer expects
Severity: MonitorP0183
The engine computer sees a signal from fuel temperature sensor A that is higher than its limit, which reads as fuel colder than is realistic.
Severity: Severity not verifiedP0184
The engine computer sees the fuel temperature sensor A signal jump or drop out in a way real fuel temperature cannot.
Severity: Severity not verifiedP0185
The engine computer found a fault in the circuit of fuel temperature sensor B, fitted on engines that have two fuel temperature sensors.
Severity: Severity not verifiedP0186
The engine computer sees fuel temperature sensor B giving a reading outside the normal range or not behaving as expected.
Severity: Severity not verifiedP0187
Fuel temperature sensor B reports a voltage below the normal limit
Severity: MonitorP0188
The fuel temperature sensor B signal is higher in voltage than the computer expects, which it reads as unusually cold fuel
Severity: Severity not verifiedP0189
The fuel temperature sensor B circuit gives an on-and-off signal
Severity: MonitorP0194
Fuel rail pressure sensor signal dropping out intermittently
Severity: Severity not verifiedP0200
Fault in an injector circuit, cylinder not identified
Severity: Inspect soonP0205
Fault in the electrical circuit for the fuel injector on cylinder 5
Severity: Inspect soonP0206
Cylinder 6 fuel injector circuit fault
Severity: Inspect soonP0208
The engine computer found an electrical fault in the control circuit of fuel injector 8
Severity: Inspect soonP0209
The engine computer found an electrical fault in the control circuit of fuel injector 9
Severity: Inspect soonP0210
Fuel injector circuit fault on cylinder 10
Severity: Inspect soonP0211
A fault in the control circuit for the fuel injector on cylinder 11
Severity: Severity not verifiedP0212
The engine computer sees a fault in the fuel injector circuit for cylinder 12
Severity: Inspect soonP0213
Cold start injector 1 circuit fault
Severity: Severity not verifiedP0214
The engine computer found a fault in the second cold start injector circuit
Severity: Inspect soonP0216
Fuel injection timing control circuit fault
Severity: Severity not verifiedP0231
Low voltage in the secondary circuit that powers the fuel pump
Severity: Inspect soonP0251
Injection pump fuel metering control A malfunction (cam/rotor/injector), diesel
Severity: Severity not verifiedP0253
Injection pump fuel metering control A low (cam/rotor/injector), diesel
Severity: Severity not verifiedP0254
Injection pump fuel metering control A high (cam/rotor/injector), diesel
Severity: Severity not verifiedP0255
Injection pump fuel metering control A intermittent (cam/rotor/injector), diesel
Severity: Severity not verifiedP0256
Diesel injection pump fuel metering control B malfunction (cam, rotor or injector)
Severity: Severity not verifiedP0258
Diesel injection pump fuel metering control B low (cam, rotor or injector)
Severity: Severity not verifiedP0262
Cylinder 1 fuel injector circuit reads high voltage
Severity: Severity not verifiedP0263
Cylinder 1 is not contributing as much power as the other cylinders
Severity: Severity not verifiedP0264
Cylinder 2 fuel injector circuit reads low voltage
Severity: Severity not verifiedP0265
Cylinder 2 fuel injector circuit reads high voltage
Severity: Severity not verifiedP0266
Cylinder 2 is not contributing as much power as the other cylinders
Severity: Severity not verifiedP0267
Cylinder 3 fuel injector circuit reads low voltage
Severity: Severity not verifiedP0268
Cylinder 3 fuel injector circuit reads high voltage
Severity: Severity not verifiedP0269
Cylinder 3 is not contributing as much power as the other cylinders
Severity: Severity not verifiedP0270
Cylinder 4 fuel injector circuit reads low voltage
Severity: Severity not verifiedP0271
Cylinder 4 fuel injector circuit reads high voltage
Severity: Severity not verifiedP0272
Cylinder 4 is contributing less power than the others
Severity: Severity not verifiedP0273
Cylinder 5 fuel injector circuit reads low voltage
Severity: Severity not verifiedP0274
Cylinder 5 fuel injector circuit reads high voltage
Severity: Severity not verifiedP0275
Cylinder 5 is contributing less power than the others
Severity: Severity not verifiedP0276
Cylinder 6 fuel injector circuit reads low voltage
Severity: Severity not verifiedP0277
Cylinder 6 fuel injector circuit reads high voltage
Severity: Severity not verifiedP0278
Cylinder 6 is not contributing equally to engine power
Severity: Severity not verifiedP0279
Cylinder 7 fuel injector circuit reads low voltage
Severity: Severity not verifiedP0280
Cylinder 7 fuel injector circuit reads high voltage
Severity: Severity not verifiedP0281
Cylinder 7 is not contributing as much power as the other cylinders
Severity: Severity not verifiedP0282
Cylinder 8 fuel injector circuit reads low voltage
Severity: Severity not verifiedP0284
Cylinder 8 is not contributing as much power as the other cylinders
Severity: Severity not verifiedP0287
Cylinder 9 is not contributing as much power as the other cylinders
Severity: Severity not verifiedP0288
Fuel injector 10 circuit reads low
Severity: Severity not verifiedP0289
Fuel injector 10 circuit reads high
Severity: Severity not verifiedP0290
Cylinder 10 is not contributing as much power as the others
Severity: Severity not verifiedP0291
Fuel injector 11 circuit reads low
Severity: Severity not verifiedP0292
Fuel injector 11 circuit reads high
Severity: Severity not verifiedP0293
Cylinder 11 is not contributing as much power as the other cylinders
Severity: Severity not verifiedP0296
Cylinder 12 is not contributing as much power as the other cylinders
Severity: Severity not verifiedP062A
Problem in the fuel pump control circuit, range or performance
Severity: Inspect soonP064A
The fuel pump control module reports a fault
Severity: Inspect soonP1233
On Ford vehicles, the engine computer cannot communicate with the fuel pump driver module, so the module is reported off line
Severity: Inspect soonP2067
Second fuel level sensor signal too low
Severity: Severity not verifiedP2068
The second (B) fuel level sensor circuit is reading higher than it should, so the fuel gauge may be wrong
Severity: Inspect soonP2291
Fuel pressure feeding the injectors is too low while the engine cranks
Severity: Severity not verifiedP2636
A second fuel pump (pump B) is not delivering enough fuel
Severity: Inspect soonP0285
Fuel injector circuit for cylinder 9 reads low voltage
Severity: Severity not verifiedP0294
Fuel injector circuit for cylinder 12 reads low voltage
Severity: Severity not verified
Sources and review
- Final Regulation Order: 13 CCR §1968.2, Malfunction and Diagnostic System Requirements (OBD II), 2004 and subsequent model-year passenger cars, light-duty trucks and medium-duty vehicles (2015 amendments)
- How to Perform a Voltage Drop Test (fuel pump circuits)
- Injection nozzle (injector): function, fault symptoms and testing
- Checking a high-pressure fuel pump
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error