OBD-II trouble code
P0254: Injection Pump Fuel Metering Control "A" High (Cam/Rotor/Injector)
SAE J2012 APR2002: metering control A high. The reprinted Chrysler check calls voltage greater than 1 volt a short to external voltage. The printed pair is diagnosis only.
Quick facts
- System
- Powertrain
- Category
- Fuel & Air
- Severity
- High severity
- Drivable
- No — stop driving until repaired
- Repair cost range
- $125 – $183 (check engine light diagnosis and testing, labor only; the diesel injection pump and a wiring repair are outside this pair)
- DIY difficulty
- Advanced DIY
Browse every code in P0200–P0299, or start from the full code library.
What does P0254 mean?
SAE J2012 APR2002 names P0254 Injection Pump Fuel Metering Control "A" High (Cam/Rotor/Injector). Circuit high is measured with the control connected. P0253 is the low row. A ground that 'must be' the cause of a high code is not in the Chrysler reprints that were read. Those reprints have a separate external-voltage test: with the actuator unplugged, voltage from the driver wire to battery negative greater than 1 volt repairs a short to external voltage, and the return wire is the next step with the same greater-than-1-volt fail. Not greater than 1 volt continues. That is two wires, two results.
The resistance steps use the opposite English. Less than 10 ohms end to end, module disconnected, ignition off, means the wire is not open. Less than 10 ohms to ground, or to the other actuator wire, or to another circuit, means repair a short. Using the short-to-ground fail as the test for this high code answers P0253's kind of fault. Circuit IDs differ by reprint (K604/K65 versus K181/K31). The VIN chart picks the labels.
Voltage on the control pin with only the actuator unplugged, module still connected, is not the greater-than-1-volt step as those reprints write it. Finish the disconnect the step is built on. Do not replace the pump because a P0251 lamp reprint says so. RepairPal's pump average of $2,630–$4,034 was searched and is outside the diagnosis pair. Do not open high-pressure fuel. Depressurize before a low-pressure fitting is opened.
Common causes
- Driver voltage greater than 1 volt to battery negative
- Return voltage greater than 1 volt on its own wire
- A short to external voltage on either actuator wire in the reprints
Symptoms
- P0254 stored
- More than 1 volt on the driver or the return with the actuator unplugged and the module in the state the chart uses
- P0253 absent, so the short-to-ground steps are not the ones that matched
- No agreed lamp result, because that lamp sits on the P0251 reprints
Diagnostic steps
- 1.Measure circuit high with the actuator connected if you are confirming the code. The greater-than-1-volt isolation is a later step.
- 2.Ignition off where the resistance work starts, module disconnected, actuator disconnected for the voltage steps that say so. Take driver-to-battery-negative and return-to-battery-negative separately. Greater than 1 volt repairs that wire. Not greater than 1 volt does not clear the other wire.
- 3.Do not run the less-than-10-ohms-to-ground fail as this code's main test. That direction is the short-to-ground step.
- 4.Ignore a forum K-number that the VIN chart does not print.
- 5.Do not add a ground repair from this page. It was not in the reprints.
- 6.The printed dollars are diagnosis. The pump average was searched and left out. Do not open the high-pressure side. Depressurize a low-pressure connection before opening it.
- 7.Verify in the bay, key on, engine off, with the chart's verification test.
Repair cost
$125 – $183 (check engine light diagnosis and testing, labor only; the diesel injection pump and a wiring repair are outside this pair)
RepairPal's check engine light diagnosis and testing, updated 3 September 2026, is $125–$183 labor. The printed pair is that figure. No parts-and-labor total was found for the external-voltage wire repair the reprints describe. Diesel injection pump replacement is $2,630–$4,034 nationally and $3,384–$7,376 on the Ram 3500 estimator, which lists other year lines. Both were searched and are outside the pair. A fuel filter at $258–$322 was searched and is not this step.
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DIY vs shop
This is an advanced DIY job. It typically requires specialty tools, scan-tool access, lifting equipment, or careful sequencing to avoid causing new failures. Plan for extended downtime and have a backup vehicle. Most owners are better served by a shop that has done this repair before.